By the way, to illustrate that profit isn't exploitation, it would be great to come up with a situation where two people have a symbiotic exchange ecosystem, where they depend on each other to have enough to keep the cycle...
i mean, for instance, a cowboy and a farmer. The cowboy would run into losses if he exchanged a pig for less potatoes than he needs to feed it (in order to breed another), and he wants to make a profit, in order to have potatoes in his dining table, and possibly expand his business. On the other hand, the farmer needs pig to feed his body to work the land and he wants to have it in his dining table as well...
This illustration needs improvements though... I would like their relationship to be more dependable -- maybe the farmer needs maneuver :/. Anyone can think of a better direct, closed situation where both people profit from each other...
Equality before the law and material equality are not only different but are in conflict which each other; and we can achieve either one or the other, but not both at the same time. -- F. A. Hayek in The Constitution of Liberty