Conventional dogmas, even if endowed with the authority of an Aristotle - ancient or modern - must be tested vigorously. If they are found wanting, we need not bother with them. But if they are found to be substantially correct, we may not overlook them.
They get, you know, whatever they want from their earnings, and their earnings go into their own company.
I was always drawn to Broadway musicals, and obviously composers like Gershwin, Rodgers, Berlin and Porter were writing music that I found wildly impressive.