Is PC ONLY a viable business option?

[Stuart]

Well having recently joined steam myself in just the past week and having looked around a bit I have come across some interesting information, for example they have 30 million users and as of now Valve makes more money per employee than Google or Apple. They don't release financial info but they control 50-70% of the $4 billion per year market for downloaded games and are estimated to be worth 2 billion. This is all from PC/Mac sales and from what I could see they have as many indie games on there as main stream games. Basically the PC game market is still massive and there is money to be made.