Exploitation has two senses. One means taking unfair advantage of someone—like if someone is inordinately sensitive to, say, cold weather and you are the only one with a blanket but in some special situation demand that you be paid for it way above the ordinary market price. There are undoubtedly such cases. But if I am at dinner time hungry and someone who owns a restaurant sells me food, thus exploiting the opportunity to feed me for pay, that kind of exploitation is not just innocent but out and out admirable. It’s entrepreneurship. Of if you love classical music and you pay an orchestra to perform some of it for you at a symphony hall, you are exploiting their skills in a most benevolent way, as they are exploiting your interests in their performance.