"we use Linux for development","we use Linux at our university" and etc.

you're about professional use here gentlemen!!! Now go and ask your nextdoor neighbors at home if they use Linux? Bet they haven't even heard of it, they even barely knows what windows is made of for that matter... Truth is they need just every tiny programs they're used to in windows, like music stuff related and etc. Would be an enormous task for every publishers to just rewrite kind of the entire programs available on the current market. There will always be a good amount of users that will say "great, now we moved on linux still I miss some programs that hasn't been ported yet" and so on. Truth is, if you don't know a thing to Linux, you are not going to succeed to install some Linux OS on your PC right out of the box. Takes some technical knowledge of PC and its global way of working most PC users don't have. You have to know your way around... As for cedega, I heavily doubt it's able to make some game like Crysis and nextgen big stuff to run properly... Hell I don't even see any true ATI driver equivalent to its windows counterpart. But maybe I'm wrong. I'm no frequent user to Linux. No Photoshop on Linux as far as I know for example.