Unfortunately, and this seems to be true with pop culture in general, lyrics are heavily outweighed by melody. True enough, it's een discussd on this very forum-and I remember being shocked by the amount of dismissive reactions towards lyrical content.
It does have its niche, however. Lyrics are the most important part of music for me, and I have noticed that some of the best songwriters are usually unnapreciated by the general public. That being said, those artists still maintain a following-its really just a matter of having the resources to reach that particular audience.
I am personally heavily influenced by guys like Warren Zevon, and I don't believe for a minute that he would have been successful solely based on his musical talent. IMO, you listen to Warren because you like what he had to say.
It's an aspect of music that is taken for granted. Most people settle for hamburger when they can have steak, metaphorically speaking...