> It works because everyone in the game has something to gain from it

It's reminiscent of triangulation fraud in that regard. The incentive is for everyone involved to keep their mouths shut because you buy something for below-market prices on sites like eBay, the "seller" places orders using stolen credit and debit cards with legitimate retailers, and the product ships directly to you. Everyone wins...as long as the account holder doesn't pay attention to their statements.

Of all the ways to treat the cancer that is advertising, I think encouraging stricter moderation by the payment providers is the one with the scariest side effects.

> Apple's contract likely puts verification on Taboola's plate

The biggest problem started when Apple accepted Taboola as an advertising partner. Taboola is the master of the chumbox/chumvertising, and it's unsurprising that ads are full of scams, that is Taboola's raison d'etre. See https://medium.com/the-awl/a-complete-taxonomy-of-internet-c... from 10 years ago. This isn't new.