Are commodities inherently exploitative? If so, can we opt out?

[alexander]

What do you mean by commodities? Historically, I believe the word has meant "useful things"; but presently it is usually tied to "an item that can be bought and sold". Is it exploitative if I give you a book that I've read? If I make dinner, and invite you to have some? If I give you a back rub? It could be, if I were meaning to manipulate you. If not, it would strengthen our social bonds. Can social bonds be strengthened without it being exploitation? I don't know. Would the answer matter though?