The only time I've seen this is when I've gone to shady websites (porn, filesharing, etc). Legitimate websites don't want to piss off their user base and don't have ads like this.
"The problem is that much of the times ads are disruptive, annoying, and potentially harmful"
Do you have statistics to back this up? We seem to need scientific evidence in every other case, but with things like this, you can pull it out of thin air.
There are a small percentage of ads that are disruptive, but the majority are not. It sounds to me like Sysadmins need to start doing their job.
"The advertising industry, and those that employ it, need to aggressively move against bad practices, or the consumers will continue to do it for them."
The consumers will only get punished. Ads are on their way out. What's becoming more popular? Paywalls, ads disguised as movies/videos/actual content.
Think of things like Dr. Phil and Dr. Oz. This is the direct result of consumers creating a culture of avoiding ads.
How about if all of the major Internet providers decide to cut off anyone trying to use Bittorrent because of a small percentage of people abusing it for illegal content??
This is the equivalent of adblocker: punishing all businesses for the actions of a few. Funny how the same people that are against this behavior has no problem using it when it is in their favor.
More bullshit hypocrisy.