E-Sim not supported STUCK on new set up

If your customer just bought it, and bought it directly from Verizon, it is locked to Verizon and will remain so for 60 days.

Reference their policy here: https://www.verizon.com/about/consumer-safety/device-unlocking-policy

This is a carrier issue, they control which carrier uses the phone, Apple cannot interfere with this. It's not about Apple not having the technology to change it, it boils down to the legality aspect.

Phone companies will often subsidize the cost (or part of the cost) of the phone to sweeten the deal and draw in customers. If carrier A gave someone a free (or reduced price) phone for signing up for their service, then the customer dropped them and went to carrier B, carrier A would lose money. Multiply this by several thousand phones and they would loose millions. That's why phones get locked to the carrier the phone was purchased from.

There's an unresolved e-Sim related carrier outage happening right now (9/30/24).

Not only eSIM, but also SIM. There are some massive carrier outages at the present time.