For Google, users are necessary as they are product to be sold. Next are various small customers (developers) as they help bring in more users, or user interactions to be monetized. Android, nest, even google cloud (lost $5B last year) are either ways to bring in more user interactions and/or ways to try to diversify the revenue stream slightly to try to convince Wall Street that they don't have all their eggs in one basket (which they do)
But there's a risk: every new user is a potential source of inappropriate content (basically: anything that might disturb the customers, who would complain about their ads being associated with something or other). Their volume is high (so there are lots of opportunities for bad actors) but also their volume is high (so false positives aren't a big deal). So it's natural to have an immune system that just boots out perceived risks and also natural not to do an expensive thing like trying to follow up and see if it was a mistake. There's no malice involved, any more than there is in a tiger that eats someone.
The only real defense for any individual or smaller organization is to reduce your risk envelope. 1: don't put all your eggs in a google basket, and 2: when you must use google, make separate, carefully unconnected accounts for each project.
This sounds like work, and it is, but you have to do your own backups, brush your teeth, and call your friends sometimes. That's life.
Airlines and ISPs usually have support you can either call or mail. I don't know how to reach anyone at Google. By anyone I mean a real human, not a markov chain.