Monopolist
Categories: Econ, Financial Theory
See: Monopoly.
One who exploits a monopoly is a monopolist. At its peak, Microsoft had a monopoly on computer operating systems (Windows was MSFT's brand). The computers wouldn't work without Windows. And Bill Gates was the big monopolist of the era. Since then, he has crushed malaria, a bunch of ignorance around the world, and all kinds of tiny startups under his enormous boots.