The fact is that as a owner of the hardware, Apple is not giving me any access to swap out the eSIM to whatever I want. They control access to the eSIM.

If they had implemented the watch with a physical SIM (using, say, pair SIMs which have existed since the 90's), I could crack it open and put in whatever SIM card I wanted.

I envision an eSIM iPhone having a beautiful carrier selection portal with gorgeous, high-resolution carrier logos... and only Apple partner carriers, with specific iPhone-tailored plans. Goodbye my discount MVNO.