I actually wonder how many real operators are around. I have the feeling that a lot of these esim solutions are actually either white label or based third party APIs. I was looking once at such an API solution, at the end that way you could run an esim business as a one-man-show.

Let's face it, one needs to have roaming agreements with like 200+ networks around the globe, that's something only national telcos have. And maybe Airalo who IMHO are one of the few "real" esim operators.