Computers aren't smart, they're high speed idiots.
AI has been around for decades and decades. Processors are getting faster at a slower pace, anyone who hopped on a 286/486 or Pentium had a different experience than getting a new generation today.
So, what suddenly changed? Sure, more parallelism, but that's been around for decades too. Now, it should keep getting better, especially since it's the latest craze and getting so much attention. And we do have more processing power than before. But, it's just difficult for me to believe that there's going to be this inflection point where it's suddenly going to go from sucking (which it does now), to being able to achieve something approximating real intelligence on a scale far beyond a human.
Give me a computer and I'll kill it in any game if we both have equal units. They are better now, but even with that, they aren't even competitive in anything requiring reasoning, fuzzy logic, intuition, etc.... If it's easily quantifiable, yeah. Anything requiring real intelligence, a computer isn't competitive in strategy games. Maybe they will be, but they are so far behind, I don't see if happening any time soon.
I'm just not sold on it. A quick Google search where I rarely get what I want, indicates they can't seem to train their search engine to work better. Whereas, if I asked a human the same thing, they would easily understand me. The human brain is imprecise, but it works on so many levels, I don't see AI replacing it any time soon. Of course, computers are better, and have been for quite some time, at many things. I'm not sure that's expanded dramatically lately, nor do I see why it would have based on any technological barriers being removed.