The problems with dispelling the AN are that you benefit from the dispel, even if you dont contribute pearls so people tend not to cooperate, to get the bigger gain out of it. its a classical
Prisoner's Dilemma .
But as done in Radiance, if you dont dispel the Arcane Nexus but take it over and give everyone that paid interest, it's a way that works. (if people have gain from their investment, they will do it)