Those cases don’t fit the standard definition of a monopoly. A monopoly is “a situation where there is a single seller in the market” (OECD). In both those case

Those cases don’t fit the standard definition of a monopoly. A monopoly is “a situation where there is a single seller in the market” (OECD). In both those cases many alternatives exist using a reasonable market definition. Just because a company has pricing power doesn’t mean it’s a monopoly.