Definitions of "cheating" vary, though. Some would say that exploitative or deceptive practices are cheating even when they're not strictly illegal (yet). Some would say that introducing competition willing to work for too little is cheating. Some would say that in a truly laissez-faire system there's no cheating at all (which is what capitalism looked like in the age of the robber barons or the captains of capitalism depending on with whom you're speaking).

Where do you draw that line?