"The ISPs now will have a series of PR articles about how Google wants to own the internet, track all your web DNS, monopolize the access, and evil blah blah."

"The ISPs now will have a series of PR articles about how Google wants to own the internet, track all your web DNS, monopolize the access, and evil blah blah." They'd be right, but that's neither here nor there in this contrived strawman. And yes, a lot of people would have a serious problem if Google baked in their own DNS. That would break a lot of stuff. And it would make the notion of checking invalid DNS entries rather unnecessary, wouldn't it?