Reliance Jio has made its presence felt in India since it launched its 4G-only network three years ago, but there has been some disappointment that its service models have not been more innovative. In a price-competitive market where consumers badly need higher network quality and greater variety of services, Jio has largely followed the time-honored way to gain market share in India, undercutting its rivals’ fees. Yes, it does proclaim itself to be a digital service provider rather than a connectivity provider, offering a suite of Jio-branded applications and content spanning the home, phone and car; and it is building quad-play propositions with its investment in fiber and media. But the strategy that has enabled it to overtake Bharti Airtel…