> But I lost access to paid services that I had set up with social login, besides all Google's services ( GCP, firebase, youtube premium, google one, subscriptions paid through play store, google ads, etc, etc).
So you gave Google total control over your entire online presence, tying a bunch of things you depend on into a tight bundle that would all get banned at once. And, by including so many things, you created more opportunities for something you did with one of them to trigger a ban of all of them.
> The google stack is very convenient,
... except when you get totally shut down for no reason. Which is an absolutely predictable consequence.
You have a very strange idea of convenience.
> and it's 2022, I'm not going to start hosting my email server,
This reads to me as "I'm unwilling to take even the most trivial steps to solve the problem".
> But what if I get reported on my domain name? What if that gets suspended or blacklisted too?
That is a risk, but, at least as of today, it's much, much harder to get a domain name shut down than to get something like a Google account shut down.
Nonetheless, you should probably be isolating things that are really important to you under separate domain names unless they NEED to be tied together.
> Do we own our phone numbers, emails, handles, PO boxes, addresses?
The user agreements for most of those will say no. The standard on the Internet right now is "We can cut you off for any reason whatsoever and you have no recourse". It's right there in black and white. And it's been that way forever. Maybe it's wrong. Maybe there should be legal changes. Maybe there should at least be changes in common expectations. But at the moment, that is how it works.
So don't become overdependent on any of them, and don't set up a situation where losing one also loses others. This is pretty basic stuff.