There would be no commercial ads online if google received no kickbacks to show ads. There would be no influencers, either. I'd be okay with non-profits and government agencies advertising benevolent things to us, like vaccinations.

The only hard part is to develop systems to actually ensure nobody is receiving compensation if they are showing a product.

I'd also be fine to make exceptions for internal advertising, e.g. you're already on the Google website and Google is advertising their own products/services to you.