For #1: Agree, Intel's manufacturing was never about efficiency though. Would be surprising if they're able to achieve both leading edge tech and operational efficiency. If Intel focused on legacy nodes for foundry, then depreciation is no longer an issue.
There are enough legacy node capacity in the world, perhaps a little bit too much already, and China is joining the competition there. IFS should not, and does not plan to (according to its roadmap) focus on that segment.
On the other hand, there are only two (or three) leading edge foundries (TSMC leading, IFS currently in distant second, and Samsung seemingly not able to ramp up its 3nm), the pricing power is strong, and IFS does not need to have TSMC's operational efficiency to enjoy a healthy margin there.
For #3: CapEx shouldn't impact margins though (although equipment depreciation will). Margins are down because revenue isn't offsetting operating costs.
Let's suppose Intel spend $3B to build shells in one year, but does not generate revenue from that spending. The shell will start to depreciate, with $0 revenue to offset, dragging down margin.
For #4: I think this depends on how Intel approached it. If Intel signals early with a large enough order, TSMC could build sufficient capacity but Intel could also negotiate by volume and by threatening to go with Samsung. Does Intel take the Apple approach and pay a premium for first access, or the Nvidia approach and hold out for the best pricing?
A monopoly is never good. Not good for Intel, not good for other foundry customers. I would argue that it is not good for TSMC, either, because a healthy amount of competitive pressure strengthens TSMC.
Can you please explain a little bit about why #1 and #3 will get resolved by their own? Thanks.
For issue 1, IFS has a bunch of under utilized (utilization is somewhere around 60%?) legacy node capacity (say, Intel 7 and even older nodes). Even when a portion of that capacity are utilized, the pricing is quite low, because TSMC sets the bar. Low utilization + subpar pricing kills margin.
Now, in a few years, IFS aims to have mostly Intel 3 and Intel 18A and 14A, the pricing will be 3x (if I remember correctly) of Intel 7, the utilization will be higher, because Intel products don't need to go to TSMC as much as today, and hopefully, the leading edge nodes could attract some outside customers, too.
For issue 3, please see my reply above. When the build out pace becomes normalized, the margin pressure will lessen.