A shared prosperity micropayments solution is entirely possible. I am testing one version of this in regards to phone spam.[1] Your bigger picture is what I am addressing with my micropayments as a service platform.[2] We are relatively now & still creating our path, but I just wanted you to know that there are people working on micropayments solution as an alternative to the traditional ad model.
[1] https://myrobocash.com
[2] https://fyncom.com