Then why isn't it poloniex's coins? Everyone can claim them, and no one can claim them. Thus only the ones who control the keys can claim them. I am not stating, but moreso asking for the sake of getting that disscussion going. (I agree that they should/could instil community spirit and donate the coins to the development.)
Not spending them does not equal thievery as has been alluded to elsewhere.
Not spending them, says who ? Where's the current unclaimed xmr balance on polo, why isn't it public ?
Sure, they can keep them but we can all switch to some other exchange. 80% of their volume is XMR so yeah, there's that.
Point of a private and untraceable currency, neh?
How do you lose your customers (who buy and sell anonymous crypto currency on your exchange) quickest? By exposing information, or by withholding information?
If they start to reveal balances in any sort of way, they will lose so much business.