Most of those people aren't gamers. If they are they are on steam.
You don't have to be a "gamer" to play games. Since the store is baked it all you have to do is click on it and see what to play. It's quick, easy and safe.
I had no interest in PC gaming, but now I'm tempted as hell because it's in front of my face daily.
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You are thinking way too small man.