I don't think Jio's game is to squeeze out revenue from the cheap data users. They've openly admitted to using Deep-packet Inspection techniques and I believe data harvesting is where the main long-term game looks to be for them.

If you're concerned about your privacy, it's usually known in India in the tech circles to stay away from Jio related products.

https://in.reuters.com/article/reliance-telecoms-jio/from-bi...

https://cis-india.org/internet-governance/blog/reliance-jio-...