On pricing, the incumbents really needed a jolt with their terrible pricing. But I think Jio went a little too far. It achieved all that it has by excessive and extended predatory pricing, primarily because it had access to unprecedented amounts of cash (from Ambani/Reliance) that the other providers do not. Vodafone-Idea and Airtel (the other major providers) have both suffered massive losses, the former has defaulted on their loans, and the stock has fallen to all time lows, and the firm itself is looking to exit the market - which is even worse as this could lead to a duopoly.
As for the access, I am not sure if India is ready to deal with unchecked free flow of information, considering how much of our population is prey to false propaganda and fake news. Whatsapp has already causes enough harm with the mindless sharing of unchecked/unverified news. With recent reports [1] of the ruling political party (BJP) resorting to distribution of deep fakes using dedicated IT cells to push a false narrative, the situation doesn't look comforting.
[1] - https://www.technologyreview.com/f/615247/an-indian-politici...