PC's (desktops) are not dying, imo....but they are becoming less needed for the
masses. As time goes on, the great majority are probably going to be less and less concerned with the more complex software - indeed they may have never been very concerned about that in the first place. If all they need is email, basic/general web access, books, films, maps, socialization etc....they don't need a desktop pc at home. My brother didn't care about games or AutoCad or Photoshop, what use is a powerful desktop to him, outside of his office? It's a big email paperweight. So in a way, with phones & tablets and all these "apps" the day-to-day usability of tech has finally caught up with the masses....making the desktop market look piddly in comparison.
Desktops/PC's will be around a long long time to come. They just won't be/aren't the lion's share of the consumer market. This will likely have an impact on (non-indie) desktop software available, I'd think, as companies start wanting to cater to where the bigger, recurring revenue comes from (Win8..sigh). It'll take a while before we know exactly what direction that may take. Including PC gaming.
Then again, maybe I'm talking out of my butt while standing behind a curtain.
