http://tvtropes.org/pmwiki/pmwiki.php/SeinfeldIsUnfunny/ProWrestling

The short version: You pioneer a match concept, wrestling style, finishing move, storyline, character gimmick, etc., on a big stage in professional wrestling, you become iconic for it. Then other people come along and do that same thing better than you, and sooner or later it becomes routine for people to do it better than you, and the fans who came along with the better versions all around them see you one day and start thinking you're not that special because they see better all the time all the while underestimating the fact that you made this thing get big in the first place.

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The long version? See below.