Then all he is really saying is that two airplanes cannot occupy the same space at the same time. Everyone knows this. Infants know this. It's simple physics.
When people talk about monopoly, they mean the absence of competition. They're talking about one firm having the control over the distribution of some kind of commodity, for instance, Standard Oil. But as you say, airlines have plenty of competition.
When people talk about monopoly, they mean the absence of competition. They're talking about one firm having the control over the distribution of some kind of commodity, for instance, Standard Oil. But as you say, airlines have plenty of competition.