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Citigroup forecasts Big Tech's AI spending to cross $2.8 trillion by 2029

Daniel Nenni

Admin
Staff member
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(Reuters) -Citigroup (C) has raised its forecast for AI-related infrastructure spending by tech giants to surpass $2.8 trillion through 2029, from $2.3 trillion estimated earlier, citing aggressive early investments by hyperscalers and growing enterprise appetite.

The AI boom ignited by ChatGPT's launch in late 2022 has continued to fuel staggering capital outlays and data center expansion despite a brief crisis of confidence sparked by China's cheaper DeepSeek model and lingering market concerns over U.S. President Donald Trump's tariff policies.

The Wall Street brokerage sees AI capex across hyperscalers to reach $490 billion by the end of 2026, up from its earlier estimate of $420 billion.

Data center operators - or hyperscalers - including Microsoft (MSFT), Amazon (AMZN) and Alphabet (GOOG, GOOGL) have already spent billions of dollars in investments to ease capacity constraints that have hampered their ability to meet surging AI demand.

Citi analysts said hyperscalers were likely to reflect this incremental spend in their third-quarter earnings calls, with the guidance expected to be "building ahead of visible enterprise demand".

Citi estimates global AI compute demand would need 55 gigawatt of new power capacity by 2030, translating to $2.8 trillion in incremental spend, $1.4 trillion in the U.S. alone.

The brokerage said big tech firms are no longer relying only on profits to fund AI infrastructure. The costs are extremely high - about $50 billion for every 1 GW of compute capacity - and the companies are borrowing to keep up.

This shift is already showing up in their financials, with spending starting to eat into free cash flows. Investors are now asking how the tech companies will fund this scale of investment, especially as traditional models fall short.

"Enterprises have provided a clear external validation of value," Citi said, pointing to production deployments at companies such as Eli Lilly, Hitachi and Wolters Kluwer.

 
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The dot-com boom (roughly 1995–2000) and the AI boom (2010s–present) are transformative periods driven by technological innovation, but they differ in their foundations, impacts, and outcomes. Below is a comparison across key dimensions, based on historical data and current trends up to September 2025.

1. Technological Foundations

Dot-Com Boom:

Centered on the internet's emergence as a commercial platform.
Key technologies: web browsers (e.g., Netscape), e-commerce platforms, and basic networking infrastructure.
Focus was on connectivity, information access, and online commerce.
Many companies were built on speculative business models with minimal technological depth (e.g., pet supply e-commerce like Pets.com).


AI Boom:
Driven by advances in machine learning, neural networks, and data processing.
Key technologies: deep learning frameworks (e.g., TensorFlow, PyTorch), GPUs, large language models, and cloud computing.
Focus is on automation, predictive analytics, and intelligent systems across industries (e.g., healthcare, finance, autonomous vehicles).
Built on decades of academic research and massive data availability, requiring significant computational infrastructure.

2. Economic Impact

Dot-Com Boom:

Market growth: NASDAQ peaked at 5,048 in March 2000, up 400% from 1995.
Investment: Venture capital poured $100 billion into internet startups from 1998–2000.
Job creation: Rapid growth in tech jobs, but many were unsustainable.
Bust: By 2002, NASDAQ crashed to ~1,100, wiping out $5 trillion in market value. Companies like Pets.com and Webvan collapsed due to unprofitable models. Long-term: Laid groundwork for modern internet (e.g., Amazon, Google survived and thrived).


AI Boom:
Market growth: AI market valued at $184 billion in 2024, projected to reach $826 billion by 2030 (per industry reports).
Investment: Over $100 billion in AI startup funding in 2023 alone; major tech firms (e.g., Microsoft, Google) investing tens of billions annually. Job creation: Significant demand for AI talent (e.g., data scientists, ML engineers), but also displacement concerns in sectors like customer service and manufacturing. Stability: No major crash as of 2025, but concerns about overvaluation in AI stocks (e.g., NVIDIA’s meteoric rise) and speculative startups. Long-term: Potential to reshape industries; still early in adoption curve compared to the internet’s maturity by 2000.

3. Business Models

Dot-Com Boom:

Many startups prioritized "eyeballs" (user traffic) over revenue or profitability.
Examples: Free services like GeoCities relied on vague ad-based monetization.
Lack of clear path to profitability led to widespread failures post-crash.

AI Boom:
More diverse models: SaaS (e.g., OpenAI’s ChatGPT subscriptions), enterprise solutions (e.g., Palantir), and embedded AI in existing products (e.g., Microsoft Copilot). Stronger focus on tangible value (e.g., cost reduction via automation, improved decision-making).
Risks remain: High development costs and long timelines for profitability in generative AI startups.


4. Societal Impact

Dot-Com Boom:

Democratized information access and communication. Cultural shift toward online shopping, social networking precursors (e.g., AOL chatrooms). Limited immediate disruption to non-tech industries.


AI Boom:
Transforming industries: Healthcare (e.g., AI diagnostics), transportation (e.g., self-driving cars), and education (e.g., personalized learning). Ethical concerns: Bias in AI models, privacy issues, and job automation fears. Cultural shift: Integration of AI assistants (e.g., Grok, ChatGPT) into daily life; debates over AI’s role in creativity and decision-making.

5. Investor Sentiment

Dot-Com Boom:

Frenzied optimism: Investors funded unproven companies with weak fundamentals. "Get big fast" mentality led to unsustainable spending. Post-crash skepticism reshaped venture capital toward profitability-focused models.

AI Boom:
Optimism tempered by lessons from dot-com era: Investors demand clearer ROI, though hype around generative AI fuels some speculative bets. Major tech firms dominate, reducing reliance on startups compared to dot-com era.
Concerns about bubble-like valuations (e.g., NVIDIA’s $3 trillion market cap in 2024).

6. Global Reach

Dot-Com Boom:

Primarily U.S.-centric, with limited global infrastructure (e.g., internet penetration <10% globally in 2000).
Focused on developed markets due to connectivity constraints.


AI Boom:
Global: China, Europe, and U.S. lead AI development; emerging markets adopting AI for agriculture, healthcare.
Enabled by widespread internet access (70%+ global penetration by 2025) and cloud infrastructure.

7. Regulatory Environment

Dot-Com Boom:

Minimal regulation; internet seen as a "wild west."
Post-crash, some financial regulations tightened (e.g., Sarbanes-Oxley Act).

AI Boom:
Increasing scrutiny: EU’s AI Act (2024) sets strict guidelines; U.S. debates AI safety and ethics.
Concerns over data privacy, misinformation, and autonomous systems driving regulatory push.

8. Outcome and Legacy

Dot-Com Boom:

Short-term: Catastrophic bust, with 50%+ of dot-com companies failing by 2002.
Long-term: Built the internet’s foundation; survivors (e.g., Amazon, eBay) became giants.

AI Boom:
Ongoing: No bust as of 2025, but risks of overinvestment and hype cycles persist.
Potential to be more transformative than the internet due to AI’s cross-industry applications.

Summary
The dot-com boom was a speculative frenzy built on the internet’s novelty, with many unsustainable businesses collapsing after the crash. The AI boom, while also hyped, rests on deeper technological foundations and broader applications, with major players showing stronger fundamentals. However, risks of overvaluation and ethical challenges loom. The dot-com era laid the digital infrastructure; the AI boom is leveraging that infrastructure to redefine how industries and societies function.

*According to Grok*
 
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