>Secondly, every trade has a counterparty. So somebody necessarily has to be at the loser's end of every trade.
This is not true. There will always be someone who wins less between the two, but it doesnt mean it wasnt a win-win trade. Some things are more valuable to one person than another.
This is not true. There will always be someone who wins less between the two, but it doesnt mean it wasnt a win-win trade. Some things are more valuable to one person than another.