htwyford

Tim Hwang wrote an excellent short book that deals with this, Subprime Attention Crisis: https://www.goodreads.com/book/show/50403486-subprime-attent.... He addresses that most interactive advertising is never seen and prices are massively inflated. The attention is subprime, like subprime mortgages. One companies realize most of their ad money is being wasted, we might see massive recognizing in Google/Facebook valuation and in the rest of the economy as a result.

> This is also one of the main reasons I use my iPhone so little, since it doesn't really have any way to adblock.

You can block ads in Safari iOS with a Content Blocker. 1Blocker is pretty robust: https://1blocker.com/

Firefox for iOS also has Tracking Protection built in, which blocks most ads.