PS4 hardly made a "comeback". PS3 wasn't a failure to begin with (almost 90 milion consoles). It was still one of the most popular gaming devices of its era. Also, PS4 kept doing what the PS3 had been doing for years, releasing the same kind of games and appealing to the same kind of player. The only reason it sold like 40 milion more than the PS3 is the incompetence of Microsoft with everything surrounding Xbox One.