It would take more than just one flop to take them down. I mean Free Radical's demise was more than just Haze but the loss of the publishing rights to Star Wars: Battlefront 3 and subsequently no one tacking on Timesplitters 4. Factor 5 still hasn't gone down yet but I'm sure someone will pick them up before they go fall completely.
As for Quantic Dream it would take more than just this game flopping. Although I don't see Heavy Rain selling enough to actually make a profit it could still do well enough to minimize losses. This game just has been in development for too long and faded away for it to be a huge success. But I think it'll sell enough to keep QD afloat.
I personally don't think advertising will help this game much at all. Doesn't appeal to enough people to really help its sales. Your mainstream gamer isn't going to buy a game like this. So reviews is really the only thing that could help this to make sure all the core userbase of PS3 is on board. If this gets even average reviews it won't do well.
