RSS is dying (or dead) because it was incompatible with the dominant business model on the internet -- advertising. This is why Google killed it. This is why lots of professional publishers hated it. With HTTP you'd be able to earn money via embedded ads but you'd earn exactly $0 via RSS since the feed was stripped of ads, just content. This forced publishers to put useless blurbs, redirecting to the HTTP version, wh…
This is exactly the recently-proposed LSAT protocol[0]. It uses the HTTP402 response code to prompt for payment over the Lightning Network in exchange for a cryptographic bearer credential that may be used in future requests to the server.