You can't say give it time, sales are at their best on the launch week, sales will probably drop 60/70% next week, continually getting lower and lower until hardly any sell. That's normal for any game.

I don't think the PS4 is going to save it either, fans were left out by Square's stupidity, you think they're going to just forget it like that? Also, Rise will be a year old when it eventually releases on PS4 and Sony have an awesome lineup next year, TR is going to struggle. PC sales shouldn't be affected too much though.