Comment by Blikkentrekker

Advertisement also more or less puts a wrench in the theory of capitalistic competition in that companies would be incentivized to create the best product for the lowest price supposedly. They're now just incentivized to create the best ad campaign which costs money and does not improve the product in any way.

Also, the existence of crippleware, where companies actually invest resources into removing features from a product is interesting. It would be interesting if we were to live in a world were both advertisement and crippleware are forbidden. It's already forbidden in many jurisdictions for various public function professions such as medical services or legal services so it's not as though it couldn't be implemented.