RSS being killed is a part of the commodification/privatization of knowledge. RSS simply gives users too much freedom.
"What if we thought of some of the most lucrative tech companies as essentially tax collectors, but privately-run (and thus not democratically accountable)? Economists call this rent-seeking, and what we’re seeing with a lot of tech companies is that their telos is little more than “rent-seeking as a service”. It’s basically baked in to their business model. Once you’ve fully developed the technology underpinning your service - be it coordinating food delivery, or processing payments, or displaying intrusive ads to people who just want to read a goddamn page on the Internet without being entreated to buy stuff - then your whole schtick then becomes collecting taxes on a whole ecosystem of economic activity."