China is frigging huge. Which means the USA has a long ways to go before we even come close to maxing out our potential/resources.
Computers are getting faster. But, that doesn't mean they will ever equal the human brain. The computer you are using now is many more times powerful than the computer I was using 10 years ago. But you know what, I can't really do anything different now that I couldn't do before. (it just looks prettier).
I have three comps. Or 4, if you count my dad's laptop. I'm on my fastest, and another one is in my basement with the fastest. The one in the living room is SCREWED UP.