As far as I know, nothing they are doing rises to violation of any law or regulation with regard to this particular move.
Is it unethical? Maybe. That doesn't mean it is illegal. It is certainly not coercive - you can freely install or uninstall adblock, and you are free to advertise or not advertise with them. They do not have a monopoly, natural or otherwise, and their product is wholly voluntary. If Microsoft were installing ABP as a matter of course in IE and they prevented you from uninstalling it - then there is an argument that this would be anti-competitive.
An independent third party distributing totally voluntary, uninstallable software? Unlikely.
What law are they violating?
I'm a software lawyer.
As far as I know, nothing they are doing rises to violation of any law or regulation with regard to this particular move.
Is it unethical? Maybe. That doesn't mean it is illegal. It is certainly not coercive - you can freely install or uninstall adblock, and you are free to advertise or not advertise with them. They do not have a monopoly, natural or otherwise, and their product is wholly voluntary. If Microsoft were installing ABP as a matter of course in IE and they prevented you from uninstalling it - then there is an argument that this would be anti-competitive.
An independent third party distributing totally voluntary, uninstallable software? Unlikely.