> don't "miners" always earn something in return for processing transactions? Yes, but that is still subject to the cost of actually doing the processing. It's

> don't "miners" always earn something in return for processing transactions? Yes, but that is still subject to the cost of actually doing the processing. It's perfectly possible that it's net-negative for anyone without free power in a certain area. There can even be load differences when it's just not worth enough that every gamer will bother setting their machine to hash in off hours.