I always wonder how much of the ad hell some websites have is necessary to maintain the website and pay employees a (hopefully) livable wage vs pure greed.
One of the worst things, in my opinion, that came from the old Internet was just how shady and sometimes dangerous ads are.
That depends on management, however it definitely could benefit the company.
I think the biggest issue is that a bunch of people are, probably unexpectedly, out of a job.