I think for the most part you're right, but I guess the mainstream has always been like that to a degree..........as you get older your expectations become lower as well which makes it even worse! Haha.....
There's still some interesting stuff out there, it may not make the 'big bucks' or the headlines.......but enough to still keep me passionate about new music ;-)
Check out bbc radio six music...............that's where I get most of my tips from these days....