Earlier quoted context omitted.
Reliance (Jio's parent company) spent years laying down a fiber optic network in the country before they announced Jio. To get subscribers off their current plans they _had_ to provide extraordinarily low prices. When they first launched, they gave away about 4GB of 4G data per day for free for the first year to all new subscribers. This shook the market up so much that the congestion was in the process for procuring…
And that doesn't answer my question about Reliance agreesively discounting data plans. Reliance just like any other telecom operator was laying cables which they could even lease to other private players. But what exactly gave them enough confidence to go ahead with Jio, a deep discounted mobile network.
Jio's network infrastructure is far advanced when compared to other operations. They didn't just build it by keeping 4G in mind. It can support 5G and follow up generations without a lot of modifications. Incumbent operators had to upgrade their 2G/3G infra to support 4G. In fact, lack of 2G/3G service is a reason why Jio doesn't operate in Andaman & Nicobar islands where it's mandatory for operators to support 2G/3G service.
> But what exactly gave them enough confidence to go ahead with Jio, a deep discounted mobile network.
I would say it was access to funding and top-level infra. Not to forget, the industry was stagnant when it comes to high prices.