I am surprised that anyone would want to continue doing business with the company after such an occurrence. If that's how they handle issues where real money is involved, why would you trust them for things where money doesn't even come into play and you have even less recourse?

This is not a bad idea. This is the only idea that actually hits the company where it hurts and puts pressure on them to not do the same mistake in the future.

I mean, I agree in principle, but in practice Google is a monopoly, and even with my heavy avoidance of Google services, I am forced to interact with them occasionally and a ban would be painful.

Furthermore, suggesting this to someone without preparing them for this outcome is an aggressively bad idea. If someone is cool with cutting themselves off from Google, great, but they probably should be preparing for that long before they issue a chargeback and discover their email account gone.

Agreed. Google Cloud started charging me for services I clearly didn't use, and I was very scared of doing a chargeback. It was only after weeks of back and forth and getting explicit directions from Google to do a chargeback (they don't issue refunds) that I finally did it. I took screenshots of the emails of their communications in case they do ban my accounts, so I at least have some proof that they told me to initiate the chargeback.

This is evil.