I think the Internet is the great equalizer, bringing formerly "indie" and "alternative" music to everyone.
I know when I was in high school, I turned to punk in part to get away from all the douchebags who were into mainstream rock. In those days [old man voice], anything non-mainstream required actual work to find, and the people willing to make the effort were few. But now douchebags have equal access.
Back then, as now, the only real answer is to forget about pre-packaged culture and make your own music...