After the demise of 3DO all licenses were sold to big software houses which probably don't pay millions for not doing anything with it. System Shock 2 has been released after a lot of struggles. Fallout is the strongest post-apocalyptic brand there is. Interplay is still making money with parts 1+2 (i'm finally buying the english version in a week, only played german for now). You can be sure the brand won't die - and with it there will be a Fallout 3.