I'm from India, one of the most populous countries in the world. And we have instant online transfers with no transaction fee and it's called UPI.
> Crypto payments take much longer time than traditional credit card ones
Everyone in India can process an American credit card? Indians are magically immune from political censorship on the basis of the payment card associations?
There are more countries than India, I’d suggest maybe taking a look at South America, Africa and Asia.
By the way many African countries have a robust mobile phone based banking infrastructure. Nothing to do with cryptocurrency. See https://qz.com/africa/2161960/gsma-70-percent-of-the-worlds-... for example.