As ad blocking increases, browser makers should add a type of "in web-page" payment system directly built into the browser. Paywalls are annoying because of friction. But imagine this instead:

  1) open page
  2) short preview and button "5 cents to read all"
  3) click button and browser opens built-in dialog similar to how appstore/play store in app purchase works.
  4) since its part of the browser, no concerns about trust or security.

This kind of frictionless and cheap paywall has the potential to replace ads. But browser makers must build it into the browser.