To your point though, Google probably has many "Paul Buchheits" (by that I mean at his level of intellect and ability), and so do many other companies. Being on the end of having a good idea, and not having the companies backing to build it, it sucks and discouraging. Thats why people make startups though (or at least why I like to believe some people do), to take that idea that the company didn't give them the time/resources for and build it themselves. One part to show the company that they were dumb, but also because they believe in the idea. I think as corporations try to maximize profits and throw things like 20% time out the door, the world will see even more startups and I do believe we are currently seeing that type of trend with the newer generation. Ideas can consume people, and if corporations learned to harness that power (Like 20% time and hackathons) they could innovate in ways that people believed impossible.