Desktop/Internet version

Is there some reason why the Devs choose this to be a mobile-only game? I mean, PC versions would be a very interesting addition to the game. I do understand that it would take a lot of effort to program and so on, but I feel that being able to download the game from the internet or play it online would mean more users and more potential for the game. I like the thought of Subterfuge on computers. Bigger screens, easier communication, more shortcuts, faster loading time and so on... 
