Asking incase, someday, I decide to visit India.
So for sure regardless whether gambling is ban in India or not, their citizens who wish to gamble will always have the internet to give them the freedom regardless of how harsh the regulations of the country is for gambling.
Like in Nigeria when the previous government banned Twitter, both the Twitter site and the app stopped working for all the citizens, except for those who are learned enough to know how to make use of VPN, my uncle who is an internet user but not savvy enough to know about VPN or how to use it was cut from his Twitter account for the several months the ban persisted until it was lifted.
So, for a country like India, it's possible for the government to ban gambling and restrict citizens access to any gambling site, only those who find their way around the use of VPN can access gambling site..