Because there is this strange innate phenomenon in rugby league administration that leads to schisms. It's almost as if the original instigators after their initial split in 1895 with the rugby union have just kept reproducing and splitting throughout the generations as the gene has been passed down.
The Super League war, the USA, Italy, Thailand administrations, various international and club factions, differing rule interpretations and endless squabbles about what should be done and how it should be done and with whos money. The game has always lacked the cohesion by those administering it to go foward, and yet it seems to hobble foward thanks to itself and in spite of those running it.
Contrast this with rugby union that seems to have bound foward in spite of the game and thanks to those administering it.