Stuff like this has been coming for a while now, and I hate it. See also how your windows login screen can have ads on it.
Considering the rate of return on advertisements, I don't think this is a financially good sign.
And interestingly a friend of mine who basically only games switched to Linux, and it seemed to have been rather painless. And most of his games work with minimal fiddling. (And there are even tools to help you with 'which games of my library will not run well'. Which did surprisingly well on his large library. So linux on the desktop might be closer than we think).