They sure seem to be keeping it around ......
google did not even market it, at all. They could blaster it all over youtube and have it as the first result in every google search that has anything to do with gaming. But they seem to have a long slow plan (or maybe just don't know how to get rid of it, actually don't want it anymore and just maintain it until the hw falls apart... who knows)
As much as some gamers, like the OP, wish those services flopping, the question is: has even one actually shut down? Actually flopped? gaika and onlive became PS Now and then PS+. Stadia, Luma, Xcloud, Switch Streaming, GeForce Now and also some services I fished out of google now eg. Shadow.tech, AntStream... continue to exist because it's the inevitable future, and are already part of gaming, not substituting it, but offering another way of access.
Meta is testing streaming to Quest. Apple considered streaming for Apple Arcade. Netflix dabble on adding more gaming to their company and them streaming in the near future would not surprise anyone, I guess.
As much as snoppy gamers hate it and want it to fail, it will not fail, flop even less. There is zero reason they would step back even if adoption is not as fast as some suit might have wanted. It will get better, mostly because the internet will get better, but I guess new codecs and faster decoders will help too. Imho playing RDR2 on consoles is at least subjectively more laggy than stream sessions I had. They will sell it in some way, price + subscriptions, ie. cheap easy to use, probably, because they want it to succeed and download subscriptions and streaming are close relatives for the all digital future. No whining and pretentious imaginary ha-ha will stop that.