Nonsense if I just wanted to kill people I'd start a fast food chain or if I just wanted to be evil I'd become a televangelist but that's not what villainy is about, it's about having a lair, having henchmen, having a grand plan, having fun, most of all it's about presentation.
Drug dealing isn't my jam but if I were to be a drug dealer I'd need diplomatic immunity from a politically sensitive resource-rich third world country so everybody knows I'm the one running the show and they can't do shit about it, because if I had to hide behind a veil of obscurity it wouldn't be fun.