The US Department of Justice and 16 state and district attorneys general accused Apple of operating an illegal monopoly in the smartphone market in a new antitrust lawsuit. The DOJ and states are accusing Apple of driving up prices for consumers and developers at the expense of making users more reliant on its iPhones.
By this logic all monopolies could be described as being better.
I think you could analyze it based on a company’s history. Some companies clearly didn’t earn a monopoly, for instance if they had a market handed to them by the government. Or, if they did the thing that’s actually illegal under antitrust law - used a monopoly in one market to expand to another.