I have no idea what the decision making looks like for this internally, but my impression as an outsider is that there's a lot of short-term empire building. A new product manager/AVP/VP shows up and wants to gather power or just make their mark, so they rebrand or merge or kill a project to show they've done something. If something new is created, it immediately becomes subject to this dynamic.
The only Google products I use that I feel I can rely on for daily use without fearing the rug getting pulled out are Gmail, Gcal, Search, and Docs. (And I don't know how they make money on Docs so I'm still nervous there) I'm not a PaaS users/decision maker so that doesn't apply to me, but if it did then I would still be very reluctant to invest there unless it was part of an easily migrated multi-cloud strategy. I though Music was safe and got burned on that with the YT migration, which is a much inferior player. Even basic things like shuffling a play list and having it endlessly play through it don't seem to work.. at some point it wanders off to some random suggested song I don't own and don't want to listen to.
It will be years before I could feel comfortable making any other sort of Google service a daily driver for a given task, assuming they get their act together.