Earlier quoted context omitted.
Due to those concerns I've settled for a privacy focused private company set up in a country with strong information- and privacy regulation. Protonmail.
I think protonmail is a great thing, but you don't have a right to your account there, if they turn bad and decide to shut you down, what law back you up in your demand to have your account reinstated ?
You are correct. I own my domain, so will be able to move my email to another provider (or self host) if I ever require it.
I also keep a local backup of my email so if the day ever comes I am ready.