Because money is not everything. Once you have reached financial security like he did, you start yearning for other things like power or a legacy. He still has a long way to go to achieve all those things. If he "retires" now, before long, the name Kevin Rose will be forgotten, because there are plenty people in this industry who have achieved his level of wealth and success.

so instead of building his own thing, the best idea is to go work on a Big Corp?

I mean, is that a good way to "leave a legacy"? Why not keep trying on Milk?

It has a higher probability of success on both accounts, as opposed to getting into a new venture that might discredit whatever personal brand he built up for himself.

Because there are people who work for reasons other than attaining monetary wealth.

doesn't answer my question in any way. Why work for someone else instead of "building your thing" (like he was apparently trying)?

Sorry. The way you phrased your question made it seem like you were asking why he would continue working rather than just pissing off somewhere with his money.

There are loads of reasons why someone would rather work for Big Corp. than doing a startup, especially when they've already checked "build a successful company" off their bucket list. I can only speculate, and I don't feel it's right to in what was probably a very personal decision.

not becoming a has been I guess. He's also passionate about startups and tech.