You don't need to changes things, but you probably want to. It's a general purpose computer and I could run e.g. StarCraft, but I would get slaughtered with controls like that.
The traditional business view is the casual gamers are growing, and the elite PC gamers are stagnant. Valve is trying to wreck that dichotomy with hardware like this, but I think that goes with making sure there are games that fit the form factor. You can't just sell this to people who rather play on their main gaming rig but are sometimes stuck without this.
Making games for this form factor != a retreat from the principle of general purpose computing.
The traditional business view is the casual gamers are growing, and the elite PC gamers are stagnant. Valve is trying to wreck that dichotomy with hardware like this, but I think that goes with making sure there are games that fit the form factor. You can't just sell this to people who rather play on their main gaming rig but are sometimes stuck without this.
Making games for this form factor != a retreat from the principle of general purpose computing.