You could call it a bubble, but it really doesn't matter to anyone if it pops. VC money is a rounding error in the overall economy.
According to Wikipedia, it's no rounding error:
"11% of private sector jobs come from venture-backed companies and venture-backed revenue accounts for 21% of US GDP."
Salaries would go down (demand for programming jobs would outstrip supply) and there might even be a real estate crash in geographic areas heavily dominated by startups (e.g., Silicon Valley/San Francisco).