I'm not your buddy.
Steam, which is luckily not an "app" but rather a program, received a very long list of highly meaningful features over the past decade. Everyone who knows anything knows that, so I won't bother typing out a point-by-point rebuttal.
Actually, there are plenty. Because, unlike every other major platform, Steam allows developers to generate game keys and sell them in arbitrary digital stores.
It absolutely is, because unlike any other party they already control the OS, which allows them to implement anti-consumer and anti-competition features to favor their own distribution platform over others.
Right, because Microsoft would
never,
ever, do anything like that. It's insane to even entertain the notion.