Yeah, I see your point. To paraphrase, it says that they have to make a profit and can't guarantee game sales from their own store to offset any potential subsidisation.

My point is that Gaben/Valve have billions and don't need the profit from it. So what if some people use it to play games from other stores? They'll be in the minority for sure.

I guess everyone is too capitalism-brained to see past the profit motive.