Great unanswered question. Nothing mentions "eSIM". I really have no idea. Speculative questions: Maybe there are some number switching, chip level protocol

Great unanswered question. Nothing mentions "eSIM". I really have no idea. Speculative questions: Maybe there are some number switching, chip level protocol mitigations inherent to the standard? Maybe carriers can push locks or there is remote attestation that could inhibit more than 4 registrations? Will read up. I've never read the eSIM standards.