Centralization is required because not enough people are willing to spend real dollars, so no large organic P2P market exists (especially for majority of the al

Centralization is required because not enough people are willing to spend real dollars, so no large organic P2P market exists (especially for majority of the altcoins). Instead you need central authority to make dollars, which is what all these exchanges do. They try to mask this behavior as best they can, but their purposes it to create dollars so that liquidity can be provided for those who want to cash out.