That's how it works. No matter what it is, when one thing becomes popular, everyone has to emulate it. And this is far from new. TMNT had pathetic ripoffs since it was a comic book. Not to mention how many Westerns they had in the 50's.\ Then Glee will fall out of relevance, and they'll need something else to steal, while putting aside something better. Or meddling and making that something better into a clone.