I have been posting in threads on this particular subject for about 10 years, because I really want to find the new good music of any genre - and constantly people post names of new groups, and I listen to them, and generally they are exactly like some previous band.There are great bands and artists today that can play instruments and write their own stuff.
So, I really want there to be some good new music, but inevitably current groups get away with doing exactly the same as 30 years ago - because their audience was not born yet 30 years ago, so they have not heard the originals.
Imagine someone 30 years from now, publishes a set of childrens book about kids who go to a boarding school where they learn to do magic and become wizards, and you'll understand what I am referring to.
If you want to know why this has happened to music, I once wrote an essay about it:
How Getting Exactly What You Want Is Killing Music - DYSKE.COM