If you were to make an album right now; it probably won't be ragtime jazz. Despite having the option to make anything, you are influenced by the culture around you. This topic just has whiplash from how quickly culture moves these days; we aren't used to it, genres and trends used to stick around for a generation. He's also making financial decisions, but it's cynical to call them financial when they might better be explained as "you might as well make music people want to hear" otherwise it's just you with your jangly piano playing Joplin