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<p>Debeers, Microsoft<p>
Pretty much all progressives sought action to control monopolies. Theodore Roosevelt and William Howard Taft stand out as the two glaring examples of progressives who took action to control monopolies.
A monopoly is formed when one company, or person, is the only supplier of a certain thing or service. Some examples of monopolies include Standard Oil, US Steel, Western Union, AT&T and De Beers.
Utility companies generally have a monopoly, but it is highly regulated by government. Some telecom companies had state-sponsored monopolies until recently (see Comcast/AT&T in Mighican).
Monopolies are regulated to protect consumers. An unregulated monopoly can charge prices higher than the efficient level of production which causes some consumers to be left out of the market. Governments can combat this by breaking up monopolies with antitrust laws and turning monopolies into public entities.
There are several good examples of incontrovertible systems. A good examples of incontrovertible systems should be camera systems, or recorded systems.
invisible hand, competition, no monopolies, etc
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There are many examples of keyboarding software available online. Some good examples include, eduTyping, TypingWeb, NorthCanton, Broderbund and KeyBlaze by NCH Software.
have a good state of mind :)
NFL, Facebook, Netfix, and Microsoft