If they backed a dump truck full of money up to my house I'd go work for them just like you. But I'd also be riding it out until the eventual layoff. What neither of us would be doing is putting in a decent amount of effort or building something cool.

Even if I wanted to work on something cool I know Google would likely release it, not maintain it, and then kill it in a few short years. So even if I was paid a ludicrous salary I wouldn't do more than was needed, let alone build something that would drive shareholder value.