I tried to transfer my eSIM from my old S21 to my new S24 the other day. It failed miserably. My carrier charges me $10 for a new eSIM (which i think is way too much for a digital service). Transferring eSIMs sounds like a good idea if it works, but might not be endorsed by carriers that earn large profits from the service.
The $10 is so ridiculous not because it costs them virtually nothing as a digital service, but because they charge you for access to something you're already paying them for.