It is true that if the successful man was forced to give food to the unsuccessful then both may survive, that is no justification for force. An end can never justify a means. I think the vast majority would gladly give voluntarily. When one person claims a 'right' to the product of another, an adversarial relationship is set up. Divide and conquer, political historians may conclude.
Lets consider another situation.
If you support personal freedom then it cannot be, if you desire a controlled 'slave' society then you will. It is often held that a company seeks to exploit people, in a way this suggests they are explicitly or implicitly seeking to use the skills of a person at the personal cost of that person. To gain their productivity without returning value. Such is even levelled at companies investing in Britain, such as the Japanese companies in Wales, whose wages may well be less than the equivalent in Japan. That does not mean exploitation is taking place.