Oh, the carriers hate it. Apple is the only company that can bend the carriers to their will. China is their one market they can’t lord over the carriers. How will they lose customers with older phones? The carriers can still offer SIM cards alongside eSIM.
I think you’ll find that iPhones are used all around the world. They are ubiquitous in the US so people tend to scoff at them being held up as a status symbol but they absolutely are in the world at large. If you look at who is using iPhones in the countries you say the iPhone is irrelevant in you’ll see it is the wealthy and the ones that want to emulate them. Those are the customers the carriers want to have. hell those are the customers every company wants. My guess is that Apple is giving carriers a few years to get on it before being left behind by iPhone users.
I wonder if Apple has any other long term plans with esim? Will they have their own MVNO offering? It would fit in with their services expansion goals.