Which is why the industry is such a clusterfuck, forcing ad spam on people who aren't interested in it.

If you buy a paper magazine you're already interested in the ads. Doesn't matter if it's pet supplies, model railways, computers, or fashion. You've predefined yourself as a potential consumer and you're going to see the ads as a service, not an intrusion. And if they're all in one place, you can comparison shop.

Facebook and Google are going to sell you ads based on your web searches. Mostly they do a terrible job of guessing what you're really interested in. Sometimes the results are so bad they're hilarious.

So instead of providing a useful service, the ads exist to perpetuate the system that generates them, prioritising vapid metrics like "engagement" - which really just measures distraction and wasted time.