1. Many of us will join them. Most people who join VC-istan and Wall Street in 2013 aren't going to make any money. By the time they're eligible to sit at the table, the money will be elsewhere. The vicious culture of VC-istan (with extreme deadlines, fast firing, and little investment in doing things right; so you end up not learning not much) comes out of this "get rich before the ball drops" culture, especially prevalent among young people.
2. Real estate. Why's it so expensive to live in the star cities? In large part, because the rest of the country is dying.
We're in 1927 territory. In 1927, there was a deep rural poverty problem (see: Mad Men flashbacks) but urban elites thought there was no way it could reach them. Some of those elites were in New York, which recovered. Some were in places like Buffalo and Detroit and Harrisburg, Pa.
Five years later, that cancer of rural poverty was metastatic throughout the whole economy.
Replace "rural" with "suburbs and small towns" and you see what's going on today, and what the risks are.
VC-istan is actually very top-down, despite its PR, which is why I don't think it's that stable. Most VC-istan companies are more vicious and hierarchical than the archetypal corporate dinosaurs; but also, to get funded, you have to live where the money is.
What's bizarre about all this is that the money often comes from elsewhere. The VCs don't get their money from local sources, and they sure aren't going to put their own money in it until they reach a nine-figure net worth, so the money that's often funding these "anti-problem" startups is from the Iowa public school teacher pension fund. Shouldn't they have, at least, the option to fund local talent and revive their own economies, instead of having it all sent West into an investment vehicle that hasn't earned its keep since the late 1990s?
At any rate, I don't know how to solve this problem, but kudos to the OP for drawing attention to it.