South Asian countries such as India, Bangladesh, Pakistan, Afghanistan, Sri Lanka, some regions are economically very distressed. Bitcoin is an important topic for these regions. Some people in this region live very close to the poverty line. Due to which it becomes difficult for them to run parallel to the country. Through this platform the foreheads of the people of all these regions are being opened.
No doubt BTC and relevant technologies have opened new doorways for every developing country although India might not be counted as developing in comparison to the other 4 you have mentioned because it has achieved a lot and done a lot in the field of the IT sector. They did not ban crypto which they did in the start but I don't know what changed their minds and they adopted crypto.
I don't have any good idea about Sri Lanka but I think crypto is banned in Bangladesh too, as I think I had some discussion here on BTT where a person was saying he has to buy a hardware wallet from a friend coming from India to Bangla because of restriction on crypto in Bangla.
So I assume Pak and Bangla is facing the same problem with crypto, I hope someday things will become more streamline on both sides.