I work with a few companies that are simply sick of Facebook and Google advertising. The fees continue to rise while the behind the scenes algorithms are constantly tweaked so as to force the advertiser to pay more to reach the same people they did previously. It is maddening and it is sad at the same time.
Maddening that it is allowed to happen but these are walled gardens, so to speak. They control, 100%, what happens within their little sliver of the overall Internet.
Sad that people continue to pay more in hopes of reaching real people. Has anyone looked into the ratio of fake Twitter and Facebook accounts versus real people? It is rather interesting. Same thing for Google. You can be charged full price per click whether that click was a mistake on the part of the visitor or not. This is particularly sad in the fact that when it is obvious the click was a mistake (less than a second or two on the site, or the page didn't finish loading) you lose that money and Google/Facebook, etc giggle all the way to the bank.
At least with Blockchain technology, there are ways to verify everything. Google and Facebook and the others don't like that as it removes their curtain of mystery.