Then expect to see a massive increase in product placement within written content and TV shows, as well as whole series which are subtly sponsored. At least with traditional advertising they are direct about it. Marketing budgets have to be used somewhere...
If an entire show is created around a product it will be easy to prove it's against those hypothetical rules. I am more concerned about subtler forms, but it seems that forced paid product placement disclosures are working just fine.
I think you are drastically underestimating the ability of media companies to develop content which subtly includes specific ideas, values or products. This already happens - it is not a future theoretical scenario.