Postal monopolies, like most other legal monopolies, are thought by many observers (1) to be technically inefficient, and (2) to have delivery functions which exhibit economies of scale.
Postal monopolies provide a cheaper mail service than competition could create.
mnli hypothesis: Postal monopolies provide a cheaper mail service than competition could create. premise: Postal monopolies, like most other legal monopolies, are thought by many observers (1) to be technically inefficient, and (2) to have delivery functions which exhibit economies of scale.