No one support none except if Sony and ZEE were supporting Zing. These broadcasters made available their low budget channel on DDFreeDish so whenever in future their audience migrate to paid service they already knew about their favourite network. And, even these channels helping them boosting online services like hotstar, LIV, 5, Voot, etc.
Also, in that case of NCF SunDirect will fit very much for them as NCF is just 49 with option to choose HD channels.