Why do Japan have better Anime then us?

Japan have waa~y better Anime then the U.S.A why is that?
i know a lot of anime there and why is that Japan have better ones?
like explain : Naruto, Soul Eater, Death Note, Fruits Basket, Hare Hare yauki, Code Geass, Inuyasha, Bleach, Chibi Vampire or Karin
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