The Silicon Valley Paradox

One would think that Silicon Valley ought to be modern.
It's at the forefront of technology for the past many years.
There are more young&smart people and money here than in so many other places.
But look around, does this place look fresh or modern?
I found that modern here means mid-century modern, which is absolutely wonderful, but what about the end of the century or next century modern?
What is the missing ingredient here?