For instance, socialization works if both people want to do it and both feel better off afterwards. Another good fit is what businesses do: notwithstanding "price abuses" like videogames or healthcare, often you WANTed the product more than the money, and vice versa for the business. In such a way, both "micro-won". Otherwise it could be money-theft or goods-theft. The world actually hinges on neither party being harmed more than they want if you really think about it (another way of saying that most of the world other than school is technically consensual - just that there may be consequences, for instance, for unpaid tax).