Google is not going to abandon cloud. I'm not sure anything I say can convince you, but the fact the Spotify, Evernote, Disney, Home Depot, Snapchat, etc all run on GCP says a lot.
Google Cloud is paid b2b, not free b2c - companies like Disney, Spotify, Evernote build very close multi-year relationships with Google, rely on Google, pay Google, etc. Google Cloud going away would shut down, for example, all of Snapchat.
(work at GCP)