I agree. Things fall into existing grooves. Your band comes up with a new sound and people say, "That's kind of like Mazzy Star," and now you point it more that way. It falls into that nearby groove instead of continuing on its own. A lot of great sounds came out of the 1960s because there were so few grooves. No one knew what the rules were.

Plus, a lot of low hanging fruit stays there because no one looks at it. Everyone is looking at x, y, and z, and there are a thousand variations of those, and they ignore a, b, and c because no one brought it up.