If extensions like this became ubiquitous, I wonder what Google's response would be? Would they refuse to run their apps on iOS like they do on Windows Phone,

If extensions like this became ubiquitous, I wonder what Google's response would be? Would they refuse to run their apps on iOS like they do on Windows Phone, or would they still have a sufficient revenue stream to not see this as an attack against them? How would web site operators respond to this?