As of now, they are the richest sporting authority, and they can manage things like this very easily without any big concern, even they can manage one ODI tournament as well for women which will create more interest and some better for spreading cricket around India for women talent.
All board may contribute some money and start some sort of league for money, as its not possible for small countries to bear losses from woman leagues. This will only help women cricketers to generate money for themselves, as of now I dont think there is any women cricketer who has earned adequate money from cricket.
BCCI is not small board and India is also not small country and if they start any league for women surely after some seasons they will receive very good response, and they will be in better position but sadly currently they are not thinking about this at all and their all greediness is on IPL and men cricket which is really poor thinking from this management right now just Australia and England Boards are doing some good for women cricketers and no other capable of doing this.
India is very good in few things and right now they can bring this big change in this region because if they announce any league with women surely many women cricketers from other countries will also participate in this and this will give them some good fan base which will also help in good marketing and better way of having some income may be in early years they have few loses, but later they can do some better.