I can't really follow up on too much music. I mean, if I had a payload of money to spend on music, then perhaps I could keep up with a bit of it. But like Abasio said, most of the time you won't be able to find what you're looking for.
Without the world wide web (yes, I'll use the correct term for it), most of us would have no chance to find goa or psy or close relatives. I sure as hell wouldn't even know what goa/psy is/was if I didn't have access to the internet/www. So it's only natural for me (and everyone else as well maybe) to download free stuff that sounds good or listen to samples or whatever. I pay for what I can, for sure. But I would need a whole lot more money if I were to even get a tenth of the music that I like that's out there.
I mean, if you went back like around 7-10 years ago and asked me what music I liked, I probably would have said only rock or maybe techno. hehe... Oh how things have changed since then...