Fallout was created by Tim Cain at Interplay. Herve Caen staged a hostile takeover of the company, forced out Cain and Brian Fargo, and proceeded to run the company into the ground and loot its corpse. Tim Cain was in the process of buying back IP from Interplay when Todd Howard swooped in and bought it for more than Cain could afford. Basically, Tim Cain had his baby - his magnum opus - stolen from him TWICE.
If not for Bethesda, we would have had multiple BG3 level sequels by now, instead of the looter-shooter garbage that Bethesda turned it into.