Given the huge scale economies of a universal service provider and the limited amount of contestable mail, it is very difficult for an entrant, at least in the U.S., to charge prices lower than an incumbent (Cohen et al.
It is not easy for entrants to charge less than incumbents.
It is simple for entrants in the US to charge lower prices than incumbents.
They were unable to experience trust with one another.
People are playing on the beach
A man shovels snow.
Two lonely fans in green ponchos sit in a stadium.
The risk estimates the effects of a month of pollution exposure.
The man is playing football with his friends.