Most music has already been written. Nowadays, all you’re doing is changing the sounds used to make the music. Punk revolved around three chords (if they could manage that, otherwise two would suffice) but that became cliché for a while.
It’s all cyclic. What is hot now will become passé then you’ll be able to mix the new trend with the old in a funny mashup.
So long as I can make my millions, I guess it won’t be that big of a deal to me.