I'm sure something can be worked out with an Indian partner company letting the government block sites it doesn't want and spying on us, like existing ISPs do.
https://www.theguardian.com/technology/2016/may/12/facebook-...
It will take off if it's better bang for the buck at any market segment. That can be Rs. 100 a month or Rs.2000 a month. If it's better than the alternatives people can get at that price, they'll use it.
https://www.televisionpost.com/dosisro-initiating-efforts-to...
FB was net neutrality, but they want to keep as much as possible, including all communications, with their own technology.