First of all, I have never said people should give their coins after they had them, I said that originally it should be equal share.
This is not the case here, the work is invented in purpose and could be avoided. In any case lets say that only 5 people willing to participate.the 1000 coins should be distributed between the 5 people that wanted to participate, each gets 200 coins. How will they decide the value of each coin? I think they will have to experiment with it until it's stabilized. later comes another one that wants to join,  they can create him another 200 coins.