If FTX had been allowed to stay profitable and grow with external market makers, it'd be possible to fill the hole, but there wouldn't have been a hole to begin with and that ship has long sailed.

Best bet for an ex-con is to bootstrap a crypto-native company anonymously, or a crypto trading firm. Given how Alameda went, more likely the former, but I suppose that's getting harder too.

That didn't work for Shkreli.