I make money with the help of online ads - not with the ads alone. I actually provide product and value, which most MFA sites, and their ilk, do not. (And I've got got a stack of junk MFA sites, that, together, throw off a modest return that they do not deserve.)
The 'problem' of users that think certain sites or ads are irritating to no end is OUR problem. The user, IMO, has the right to do what they want with a website on their browser. They don't owe us a living. It is a problem that I don't believe will allow a mandated solution.
We can do what we want to the user and they have to take it? Never gonna happen. Users that spit in our eye make us better, more responsive, and all that good stuff. I play both sides. The internet pays my bills. I need users. I need customers. I need clicks. As a user, if I want to hack up the display of your site I will. Don't give me a reason to do so. There is a big market in empowering the user. Firefox is one of the best things to happen to the web. They put a full spread of torpedoes into Opera. Before Firefox, Opera was the 'geek' browser. If one had the technical skill, almost anything was possible. Firefox (defenders of liberty:)) made miracles possible for the average user with a click and restart.