India has about 1.5 billion people, and has only recently been getting most of them online. Less IPv4 legacy, and it has always been obvious that IPv4 was never going to be ‘enough’ to actually onboard everyone anyway.
When I lived in India, everything had IPv6 out of the box.
Adding on. Jio was a late entrant, so they could not get significant ipv4 address space without great expense. They deployed as mostly v6 with a tiny CGNAT. They also had an extensive 'pre-release' offering at zero cost to subscribers which got them a huge number of subscribers and clout to encourage internet services to offer ipv6.
When I lived in India, everything had IPv6 out of the box.