Big and powerful business persons earn huge profits while small traders earn very little.
For example, the shop owners in a weekly market and those in a shopping complex are two different people. One is a small trader who has little money to run the shop. Whereas the other has a lot of money to spend on the shop. The earnings of these two people are also unequal. The weekly market trader earns little profit whereas the shopping complex owner gains huge income.
Not only the shop owners are different people, but also the buyers. In the market we see different types of buyers.