Dark Showerthought: There's probably some evil corperation trying some Umbrella shit IRL that we don't know about simply because they *aren't* as stupid as Umbrella.

"Hey boss should we buy an entire town and pour our experimental viral solution into it's water supply?"

"Are you crazy, fuck no! Just invite some random people into the lab who need money fast and can be silenced by the threat of NDA'S. Oh and make sure to acutaly use the biohazard protocols so as to avoid escapes of containment. And make sure none of those random people are undercover reporters, police or military personel, or anyone even remotely capable of figuing out a keycode puzzle."