I had already begun using my own domain for emails by the time it happened to me, but nothing accelerated that process faster than getting locked out of my Google account. I was lucky it wasn't permanent in my case, at least, but it was a wake up call that I really cannot trust them.
For me, it all happened because I tried to purchase, of all things, Minecraft from the Google Play store and typed my CVV in wrong a couple of times. That locked me out of my email and all Google services for about three days while they did some sort of fraud verification.
While, yes, things can happen to FastMail, etc, the likelihood of having my domain stolen from my registrar (which is very possible) is a lot lower than
something happening to my Google account. And, god forbid it did happen, in my experience, getting in contact with a human at a domain registrar is easier than getting in contact with a human at Google.
For me, it all happened because I tried to purchase, of all things, Minecraft from the Google Play store and typed my CVV in wrong a couple of times. That locked me out of my email and all Google services for about three days while they did some sort of fraud verification.
While, yes, things can happen to FastMail, etc, the likelihood of having my domain stolen from my registrar (which is very possible) is a lot lower than something happening to my Google account. And, god forbid it did happen, in my experience, getting in contact with a human at a domain registrar is easier than getting in contact with a human at Google.