The problem here is that every other board is trying to copy the IPL. But they fail to understand that they don't have such large market at home. For example, the Sri Lankan Cricket Board had launched a similar league a few years back. It folded after just one year, resulting in huge losses to the board. The Msanzi Super League (MSL) of South Africa is also in deep loss. Only a few such as the BBL and CPL are in profit.
@Vishnu.Reang copying IPL is suicidal because none of the leagues can match the salary that IPL players get, and if there’s no good salary on the table then no top player would like to come and play in those leagues. Second reason why other leagues are a big flop is because IPL plans it’s schedule in such a way that no major ICC tournament is on, which allows all global stars to participate in IPL and other’s leagues do not get such kind of luxury.