Русско-англо-русский юридический словарь

A natural monopoly is a monopoly in an industry in which it is most efficient (involving the lowest long-run average cost) for production to be concentrated in a single firm. This market situation gives the largest supplier in an industry, often the first supplier in a market, an overwhelming cost advantage over other actual and potential competitors, so a natural monopoly situation generally leads to an actual monopoly. (Wikipedia)

Accounts payable is money owed by a business to its suppliers shown as a liability on a company's balance sheet. (Wikipedia)

There are large areas of economic life in which the parties to contracts have such unequal bargaining positions that little real negotiation takes place. These contracts are often known as contracts of adhesion. Familiar examples of adhesion contracts are contracts for transportation or service concluded with public carriers and utilities and contracts of large corporations with their suppliers, dealers, and customers. (Britannica)

Under the cash method of accounting, sales are recognized when cash is received from a customer, and expenses are only recognized when payments are made to suppliers. (accountingtools.com)