Further thoughts from the forums:
This is simply untrue--first, the current corporate model, where corporations have the rights of individuals, has only been around for a little over a hundred years--that's why we're seeing "corporatization" as a galvanizing effect across many different fields and pursuits, as the corporate model grows into and tries to assimilate different industries.
It also bears noting that I draw a strong distinction between "business" and "corporation"--they're not synonymous at all, and what I'm specifically talking about is the coporatization of American theater, the death of the repertory system and the failure of the regional theater movement.
I won't even address the arrogance and infantilization on display here with regards to the work of artists. That I leave as an exercise for the reader.