For example, a certain person may try increasing their wealth by investing in startups, but prefer working in a non-startup. Or another person may prefer investing in non-startups (safe, dividend paying stocks or bonds), but try increasing their wealth by working for startups.
For people with talent in creating products, best to focus their investing in safe, low maintenance non-startup investments and their wealth creation in working for startups. For people who have access to capital and a knack for choosing winners, they should work for non-startups (or philanthropy, or whatever, since they are probably already fairly wealthy) and invest in startups they think can win.
For the really talented, who both know a thing or two about building products, and also can pick winners, then you should work for a startup that invests in startups. See: pg.