This is not the same scenario as we noticed during India's Tour of West Indies wherein DD Sports had entered agreement with Fancode (which owned TV rights of the series) and made it available across Cable TV and DTH Platforms too.
Here most probably DD did try to enter agreement with Amazon but same failed as u might remember that DD Sports posted a tweet before start of 1st T20 match that it will b available on DD Free Dish, Terrestrial and All DTH / Cable TV Platforms but later deleted that tweet. Thus it seems negotiations fell apart somewhere at the end.
Post this it seems DTH Platforms have come together and worked out an agreement with Amazon Prime Video to make the series available via DD Sports 1.0 to its subscribers, u can say that DTH operators bought partial TV rights thus just for making series available on DTH Platforms. After this they would have consulted Doordarshan which after receiving go ahead from Amazon would have allowed for addition of DD Sports 1.0 on DTH Platforms.
DTH Platforms r ready to do anything to stop/reduce subscriber churn from their platforms
