>Ban user tracking and targeting.
You do bring up a good point though. Reducing dynamic ad content and user targeting reduces advertising "supply." Instead of showing 10 ads at once, you show 1 ad per timeslot.
Small businesses wouldn't have the in-house capacity to search for lower-cost ad options directly. They'd have to use brokers, eg some SaaS ad marketplace, or automated tooling to just submit to price-appropriate options. This does increase burden on small businesses. But most of all it increases burden on the companies that show ads. Now they have to hire (a team?) of people to manually review something that used to be automated.
I don't disagree with OPs point. Manual curation would lead to higher quality of ads, and probably benefit society as a whole. Just a lot of barriers.
As a counterpoint, most podcasts use this manual curation model with the hosts themsevles reading out the ads.
And I am far, far more likely to explore a product endorsed by a favorite podcast than I am to click into a random link on the very same podcast's main site.
Is that value worth it when it opens the floodgates for scams (manual review is impossible since the amount of ads is now near-infinite instead of being limited to a single ad per ad spot per period of time), misinformation (you can target your ad to only the people most likely to fall for it, while remaining completely invisible to those who might identify it as incorrect/malicious), malware or privacy violations (ad targeting involves collecting large amounts of personal data which can then leak or be misused)?
To remove dynamic ad content ignores the value that can be unlocked through targeting to more specific individuals. It must be considered, especially for small businesses who may not be able to afford larger timeslots, as are being proposed here. I think it is important to remember that a huge part of this more personalized marketing approach is that it allows small companies (not the P&Gs of the world) to engage in the ad market far more productively, with niche products. To ignore these advantages does the benefits of the current dynamic market a great disservice.