Just my personal opinion-
I feel the way these broadband/wireless service with ott is growing at a fast pace but the dth are still stuck with old technologies, infra, software etc due to which many people are migrating to ott not only because of the innovation and ease but also because dth service is same since years , they are not even trying to enhance their services or retain customers. Take for example, pack prices, instead of reducing the ncf to retain customers they have increased it to compete with other dth and not with fibres .I don't understand why ncf is high, when sun Direct ncf is just ₹60 why Airtel and tp , charging ₹153? What are they proud of?.so if someone is getting all the services around ₹700 why would he/she will pay ₹300+ just for dth with inferior hardware and softwares...here also one best example is while jio stb has 2g ram and 32gb storage , Airtel and tata is still stuck with 2+8 which is very less as per today's standards and their software takes really long time to bootup (compared to smarttv os) here instead of fixing the issues they are now focussing on ott which ironically lags and hangs because of the first issue!
If people remember back in cable days we had few channels only (<100) and it was very easy to access , dth can provide the same experience by easily implementing fav from lcn number 1-99 but in every dth they are making it complicated, not sure about the reason...So if a customer has to pay more and again access channels with some efforts and struggle, why should not he/she choose fibre connection over dth?
So if today dth is in loss, it's all because of their negligence of customers requirements and their ego..I feel dth era will be over soon!