An interesting proposition using a few orchestras as examples (or prototypes):
Spira Mirabilis represent a transformative vision of what a symphony orchestra can be. They are a revelation, proof that musicians can not only survive but prosper when liberated from the variously benign or malevolent dictatorships created by the world's conductors. There are already famous examples of virtuoso ensembles who choose life without a maestro: the Orpheus Chamber Orchestra, the Australian Chamber Orchestra and the Freiburg Baroque Orchestra. But mostly, the bands who play without a conductor replace the stick-wielder with a musician who leads from the first violins – so they're not as democratic as they seem.
While my various choirs might do better without me in charge, I doubt yours would. Or would it?