The dominance of a handful of powerful tech firms has led some US politicians to call for action that would promote more competition in online search, retail and social media. US regulators have sued Amazon, alleging that the internet giant is illegally maintaining monopoly power. The Federal Trade Commission (FTC) said Amazon uses “a set of interlocking anticompetitive and unfair strategies” to push up prices and stifle competition.US anti-competition legislation is complicated, but generally, prosecutors have to show companies have acted in a way that hurts consumers financially. Do you think that Amazon is a monopoly in the US?