They can't if they've commited crimes and are in search and capture, like most of the heads are. If you're a mid scale weed producer that didn't use violence, sure, you have a headstart.

If you're a meth producer that killed (suspected) competitors and snitches, you're in for a lot of problems if you want to make your business legal.

"Oh, hi. I'd like to register a new LLC, these are my papers..."