The big untapped market at the moment is smart TV's, this will be addressed in the next year or so.
PC gaming is now split into regions, UK and the states have seen a massive decrease in sales, Europe and the far east a massive increase.
As was proven to me a while back, console and PC sales worldwide are about equal, it's just that some regions favour one or the other.
10 years is not that long really.
1980's we had dedicated electronics and poor quality cpu's, but we still had TV,Machine,Joystick
1990's we had general purpose cpu's with dedicated video hardware, but we still had TV,Machine,Joystick
2000's we had general purpose cpu's and general purpose GPU's, but we still had TV,Machine,Joystick
So from that I would predict that in 10 years time we will still have...... TV,Machine,Joystick
I guess the difference will be parallel processing, we now have a lot of parallel computation going on in the GPU, I expect the same to happen on the CPU.
Then we will sort out the men from the boys, I used to write code in occam for the transputer.... that was fun.