I"m very happy with being able to buy one game for two platforms.
Being a parent where my xbox is on my main TV, I can still have the kids play a game or watch a show they want to, and I can play on my PC.
I know Brad was down on it, and it seems a lot of people I've talked to don't see the point, but Kudos to Microsoft for letting me buy one game and play on two platforms. I won't have to buy a game like Overwatch twice in order to play on two different systems.