[drcube]

Simple. Monopolies and duopolies shouldn't be awarded patents, which are just monopolies themselves. Why award monopolies to monopolies?

[rcthompson]

First you have to prove in court that they are a monopoly.

[taligent]

Nothing wrong with being a monopoly so long as you don't use that monopoly to restrict competition.

[tikhonj]

There's nothing illegal with being a monopoly. That doesn't mean it isn't wrong. I think in most cases (with exceptions like utilities), not having monopolies leads to a healthier market than having them.