Google made it impossible for existing solutions or upstarts to compete with their free tools, then slowly killed off marketing it and supporting it. The final straw was when they killed their reader.
Google killed RSS and they are actively killing other vital parts of the Internet in favor of their tech (forcing the use of their AMP tech for the best spots on their search engine results is anti competitive, Their web browser Chrome has saturated the market and is also making decisions which will undermine the Internets open protocols, but literally hiding the protocol in URLs, hiding the path in URLs, thus forcing people to search more).
Google is not alone in using it's capital as a destructive force on open protocols and standards. Facebook, Amazon, and Twitter are the same way.
Im saddened by the death of rss too, but i think its a lot to blame that soley on google. If the rss ecosystem was so weak, that shutting down a single rss client killed it, it couldn't have been long for this world anyways.