Why only Pc?

[SHODANFreeman]

So why only make this game for the Pc? Why not get it out for the PS3 and X360?

Either on a disc or digital? Why sell so few copies when you can sell so many more?

And before the nerd rage comes I would like to say I like your games realy much but betting on a old horse aint the best...time to move to new better fields Frictional Games?

First of all, I don't think they have the money to buy devkits.
Second, I doubt they have the resources to build and test ports of a game simultaneously, even if they had devkits.
Third, the only console that could likely pull off their control scheme and not feel completely terrible is the Wii.
Lastly, PC is far from an "old horse". In 2-3 years, PS3 and 360 will be old and obsolete (and the way things are going, nothing will be backwards compatible next gen), while you can still play games from 1980 on your PC right now.