I think a lot of the issue with ads on the internet is that they are increasingly user-hostile; Minimal communication of the utility of the advertised product,

I think a lot of the issue with ads on the internet is that they are increasingly user-hostile; Minimal communication of the utility of the advertised product, heavy use of psychological manipulation, ads masquerading as genuine content, excessive length, etc. The pervasive use of surveillance to target these ads and make them more manipulative is also a major issue. The result is that users block ads, which means ads become even more numerous and aggressive, which results in a feedback loop. A lot of this could be reverted if advertisers used more informational ad styles, similar to those used in the mid-20th century, and used only context-based targeting, but I doubt marketing executives would go for that.