And Google has an absurd share of the search market, with which they can make or break (and have made or broken) all sorts of businesses. Consumers can choose not to use Google, but businesses can't opt out of how they're listed.

The Office formats, for all their quirks, are open and documented. There's no one forcing you to use MS Office. You probably can't switch which OS you're using at work, but Windows is fairly permissive of portable apps that evade most of the security restrictions. We're locked into using IE8 at work for compatibility reasons, but I'm able to use Chrome on my work computer just fine.

If you don't think Google is heading down the old Microsoft route, I point you to the bundling of Google+ with all of their other apps. Yes, it delivers value. But that's what Microsoft said when it started bundling IE with Windows.