are there any other people that started in stand-up and ended up being worth over a billion dollars?

sure we can rate what pinnacle of success means in comedy -- maybe he's not the funniest -- but generally we rate success in most of the West by pay rate and hoard..

my 2 cents: all the comedians that famously ran out of money entirely during their careers are funnier people. carlin, pryor, lewis , kinnison, rooney, lenny bruce, sinbad, chris tucker.. the list goes on.

... but they didn't end up billionaires.