alasta:
The other advantage is that if your device gets stolen with a physical SIM then the thief could remove the SIM, put it in another handset, and then incur charges before you've had the chance to cancel the SIM. This isn't a problem with an eSIM because they can't physically remove the SIM and they can't get past the passcode, Face ID or Touch ID on your phone.
Cool, I hadn't thought of this use case, for some VIP users it might be very useful to know that their number can never be used by anyone else if they lose their phone or it is stolen.