Well, that's certainly an article title isn't it. But I mean it. Microsoft, don't you dare touch Valve. You're fat enough already and too big as it is.
Have you been plugging your ears the past few years? Valve came out with Alyx, which was an amazing and first of it's kind game. CS2 is basically in public beta at this point, and they are actively working on at least one new IP.
Also they have been updating TF2 again, which means a lot to me because I like TF2.