Exactly, even folks using Gmail still (for some reason) have an escape hatch if they use their own domain. But if they use @gmail.com, they are basically using

Exactly, even folks using Gmail still (for some reason) have an escape hatch if they use their own domain. But if they use @gmail.com, they are basically using someone else's email address... one where the true owner, Google, has every right to revoke it at any time.