Well I understand what you are saying, but I think it is possible to do even with "mainstream" music, for lack of a better word. One clear example, the very first one I can personally recall, is the bass line from The Eagles "Hotel California". I don't know about others, but I can separate it and here it distinct from the accompanying instruments. And I think it is rather enjoyable. At times I just "hear" music, have it playing in the background, and at times I will "listen", have nothing else and devote it my full attention.
That being said, I do agree with the sentiment that many people "like" groups for no other reason than that is "what they have been told to listen to" by "experts" and "critics".
To your statement that you can write music around their music, that may very well be. you may find people who prefer your music to theirs, and that is their opinion, and you will find people who will prefer the other. I am not a Picasso fan at all, but some people think he was the greatest of the 20th century. I am a Raphael fan, but there are those who think he is no more than another artist for the time period. When it comes to Music, Art, Literature, alot of it is personal taste.
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I drink, I smoke, I gamble, I chase girls-- but postal chess is one vice I don't have.
Ah, but is life worth living if you have to worry about so many things?
~Mikhail Tal~
World Chess Champion 1960-1961