Yea, all you have to do is pick three consecutive winners.
Which is trivial, with hindsight.
Less so in the moment. You could equally well pick three failures, and end up with close to nothing.
Your odds are much better with 3 companies, that one might succeed. Especially if you are joining late-stage startups. But at the same time, your equity package will be smaller, so the exit won't be as impactful.