Principle of an ICO is to raise money for the developpment. An ICO that has already a working product does not need any funds and just want free money 
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...Why would you say raising money for development is a principle of an ICO? It just so happened right now IMHO
What I meant is that an ICO is designed to raise money in order to develop its product. If product is already finished, no further money is needed and it is just giving the developpers free money.
However I do not clearly understood what you meant
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