"You Don’t Know It’s A Bubble Until The Bubble Ends"

If you haven't lived through an Internet investing bubble and the burst, you are in for some surprises. Funding is going to dry up, which is why so many firms are raising money now, while they can. Innovation won't stop, but lots of would-be innovators will find themselves in an investing nuclear winter. Firms won't be able to easily go public, so we'll be back to the "sell my company to Google" exit strategy. There will be additional names on the "sell my company to" list, but the point is that it will be impossible for most start-ups to raise money, and hard to exit.

For people not in the Internet business, the impact will be more diffuse, but might be worse than the last time around, in 2001. The reason is that the economy was healthy then, and is definitely unhealthy now. House prices were still in a building bubble. Housing now is a bubble that has burst.
Some might still argue we are not in a bubble, or building towards a bubble.

"On the general question of bubble, in the first place you don’t know it’s a bubble until the bubble ends, by definition," says Google Executive Chairman Eric Schmidt. "The rule I set for myself 10 years ago was that if the press calls it a bubble then I’d pay attention, and let me report that the New York Times, the Wall Street Journal and the Economist have all written articles saying that it’s a bubble."

Almost by definition, once the bubble bursts, we are going to find out that no companies are worth as much as investors thought they were worth.

Eric Schmidt: You Don’t Know It’s A Bubble Until The Bubble Ends