It's an appeal to the average person's "fair play" instinct. I'm not saying that they should or shouldn't do something like this, but it seems very effective.

It's an appeal to the average person's "fair play" instinct. I'm not saying that they should or shouldn't do something like this, but it seems very effective. They have a perfect narrative for people to wrap their heads around, and even if nothing illegal was done, it still feels like Microsoft is doing something "wrong".