Is a world with Patreon more or less gate-kept from the perspective of "influencing things to your taste" than one where you had to be rich enough to sponsor a Mozart or such?
Is a world where you can't afford to make your own compositions because you don't have the money to afford the tutelage or the free time to master every single step more or less gate-kept than one where you can play around and learn on free or cheap software tools?
It'll be different but there will still be artists - creation will be open to more people than ever before - and I also don't expect that the power-law function of cultural products and taste will change, so there will still be big winners from those artists able to command $$$.