It is difficult for Jio broadband to expand in cities/ metro like Delhi.... These are free Preview service customer data...As soon as they start charging for their service, their customer base will vanish.
Wireless was altogether different thing, here they have to hire manpower to lay/ install/ maintain fiber and equipment....... And they will fail miserably, at present prevalent price of broadband service 50Mbps@500Rs.......
They might expand in C & D grade towns where there is no competition.
On top of it Ambani's have the least trust and worst reputation among all....... I would trust my local LCO more than Jio.
Such articles are only BJP style stunt to retain bhakt followers.