Why doesn't Microsoft put an ad-blocker in Internet Explorer to reduce Google's revenue?
EDIT: And that of Facebook.
Because Microsoft's primary customers are not end users, but integration companies such as Dell and HP, and these companies maximize profits by loading PCs up with lots of advertisements.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.
Poster's Note: omg, it felt so weird typing "2012" up there.