Not simply "not incentived" but actually decentivized. It's not just that companies lose the ability to have a better algorithm to recommend products, but the data itself is worth a fortune. Google, Facebook, etc are worth as much as they are because of the give amount of personal data they've gathered. And, the reason it's worth so much (well, one reason, and probably the least-scary one) is advertising.
Online advertising is the keystone keeping this pile of shit upright and I can't wait until that bubble finally pops. That is when the narrative will change. None of the ideas in this article will come to pass until all of the data that Google hoards is suddenly useless.