I learned about this multiplayer segregation recently, and It puzzles me. Is this a business decision? Or do they just not bother tp build their multiplayer protocols to be platform-agnostic?
If the Windows Store dies (or stays irrelevant for games, forever and ever) than that's a good thing. I agree with your sibling comment: This is good for Valve and as long as Microsoft DOES refund people that use the Windows Store I'd say there's no harm done.