Different styles of music have separate groups of people interested in them i.e., not counting those who like more than one genre. For example, if you want to put out music for different groups, you have to get the word out to all those groups. You have to divide your time. The question for you is: Can you keep up with recording artists working only in one of those crowded forms of music, in quality or amount of output? What would make your songs different? Is it possible to create a unique sound by thinly spreading your efforts across different music types? Simply looking at it from that view: It's a big risk to try to get into multiple subgenres if you don't already have a strong position in at least one.
