I totally get what your saying, some music that's classified as rock is just commercialised crap. I don't like the way the music industry is going, all of these trendy popy bands, getting classified as rock and metal, it really is getting stupid.
To be classified as rock you need to play proper rock music, and live the lifestyle to some extent. It doesn't cut it to act that way, just for the media and music videos.
Some of these "rock" bands couldn't last 1 day on the street on their own.