If a browser bans ad-blockers and people start to fiddle with DNS, wouldn't it be easy for a browser to use it's own DNS system? If a browser turns hostile there is nothing you can do.
Yes. Golang actually encourages developers to use their own resolver in applications instead of the system one. Google itself uses its "Public DNS" cache addreses in software and hardware it distributes. Neither decision may have been made with the intent of thwarting DNS-based evasion of ad/tracking, however, the resulting consequences may well be the same.
"... there is nothing you can do."
I am typing this comment through a text-only browser. HTTP requests, with a bare minimum of HTTP headers, are being sent from a proxy I control, not the browser. Yet the comment looks no different than any other comment. It works. I have freedom to choose whatever software I want to make HTTP requests.
I try to avoid any software (not just browsers) that access the internet and bypasses the system DNS settings. The word "hostile" is a good choice of words I think to describe such programs.
