I think the beliefs of the Cathedral are subject to evolutionary pressures same as any. The wealthy and powerful apply pressure to emphasize the aspects of thought that don't threaten their power or wealth. But there's also a consensus aspect to it where one elite can't necessarily go off and do their own thing without repercussions from the others, and the entire elite can't necessarily go off and do their own thing without repercussion from the commoners.

To continue your example though: things are further complicated when the largest shareholders end up being fund managers like Blackrock and Vanguard, who vote simply based on proxy voting policies defined by the organization. Who sets the policies? The elites at those organizations. Who are the major shareholders of the Blackrock and Vanguard funds? Probably pension funds, trusts, and 401(k)s. How do they advise Blackrock and Vanguard to vote? They have their own voting guideline policies. And so on and so forth.