I know it's been argued before...
but I really enjoy having my media consolidated and verified with a single service. I believe the future of all media and data is in digital distribution/cloud computing. Where everything is attached to your account and you can access it from anywhere with an internet connection.
I use iTunes for my music. I've lost a computer and consequently everything I downloaded since I didn't back it up and Apple doesn't have an online library for your account.
I use Steam for my games. It is a form of DRM when you come down to it, but you do own what you purchase and it is backed up online unless Valve totally fails and you didn't physically back it up yourself.
There really is no movie service besides streaming Netflix rentals online. You don't actually own the movies you watch it's still a rental service.
I want to buy this game on Steam. Tell me why bringing it to a larger audience would be a bad thing. I know Steam is a competitor to Stardock's service. There are people that will use both services and can choose whichever. There are people who only use Steam. There are people who only use Impulse. I think having it equally available to all of these people would be much better in the long run. Sure there are those that would support Impulse over Steam, but these people are far fewer than those who won't even hear about it if it's not on Steam.