"Why? Because they may elbow out people who haven’t had enough time or space to make their own mark."

Well, then, they best get to making time and making space, don't you think? There's 7.5 billion of us.  They aren't special. What they love and consider sacred the next person over has absolutely no obligation to love or find sacred, as well. If they don't want someone to come along and make art around some aspect of their culture, they best get off their duff and get to making it themselves. They keep what they support, they lose what they neglect.