Because it does not benefit society in any way to grant them a monopoly on Mickey t-shirts. Society as a whole is better off when there is market competition. M

Because it does not benefit society in any way to grant them a monopoly on Mickey t-shirts. Society as a whole is better off when there is market competition. Monopoly is only granted to encourage the initial creativity. There is also significant public cost in protecting the Mickey monopoly, such as courts and police.