I hope not otherwise I'm not going to have much to play!
But in all seriousness I can see both sides of the fence. Rising development costs are going to start nipping at the asses of Japanese companies (hence the run to mobile) and I don't see their audiences growing by much, though there are some bright spots here and there (don't want to sound too pessimistic).
And at the same time I can't really see Japan completely leaving the market. It would just leave a huge hole that I really feel like won't be filled that easily. Combine that many potential sellers aiming to fill that hole and well, there you go.







