For a moment let's assume Jabba's model of reincarnated souls must be true, and even ignore that Jabba also claims that new souls can be created in infinite potential numbers de novo. Then there must be 7 billon souls at minimum in the world. So chances of Jabba rolling the right number is 1 in 7 billon even by this scenario. That is a very small number. Almost unimaginably small. So Jabba must be incredibly lucky even under his own theory.