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The clean ride capped a perfect competition for Blum and DSP Alice who did not knock a barrier down through five rounds, thus returning Germany to the top of the podium in the event for the first time since 1982.

A standard definition of market power, say the authors of the IMF paper, is the ability to maintain prices above marginal cost—the level that would prevail under perfect competition.

Maybe that's not perfect competition in the economic sense.

Economists call it "perfect competition" and it's basically the opposite of a monopoly.

If there were thousands of players, the HHI would be nearly zero — the blissful state of perfect competition mentioned above.