Damn, mobile is really big. I wonder what will happen to the industry when the mobile bubble bursts.
It will never pop, in the near future smartphone/tablet people will begin to be able to run PC-like games on their mobile devices through clould tecnologies like the one Microsoft is working on.
It's not a matter of power, it's a matter of growth and market saturation. Just look at companies like Zynga or Rovio, the moment their star game starts losing momentum, they get hurt way faster than regular gaming, due to the nature of their monetization.
Also, mobile gaming is too dependent of the asian market, and considering China adds and takes away draconian regulations on gaming all the time, many companies depending on the chinese market can go down fast.