Whilst anything is possible, it ought to be much easier to gamble on staying married than gamble on a fickle market of consumers liking a product that you haven't built and is in no way similar to anything else.
So if you go into a startup, you might end up with both a failed business and a divorce.
It's only tenacity, talent, and good timing that lead to Musk and Brin having the good luck to be divorced.... but successful.