>When you open up a lot of stuff and your competitor uses it freely and gets credit for doing that, but you can't do the same with your competitors' products - what's the outcome?

You mean like how Chrome is bundled with Flash and Java updates on Windows, yet alternate browsers cannot even be made for Chromebooks?

>is only going to force Google to become more closed to stop Microsoft from doing that.

Being "Open" is about principles, no matter the outcome. If you close off something because people are using it, then it was never open in the first place.

It's like saying I offer you $100 on the condition that you won't take it. What would be your reaction if MS restricted Secure Boot on Windows to stop Linux because people are dual booting or switching to it? Or what if they block Chrome on Windows to boost IE/Edge? Would you say they are being forced to do that because Chrome is getting marketshare, like you said Google was forced to close Hangouts and Android?