SCOTUS rules AmEx didn't break antitrust laws by discouraging merchants' promotion of rival cards, in win for firms like Amazon operating in "two-sided" markets (David McCabe/Axios)

David McCabe / Axios:
SCOTUS rules AmEx didn't break antitrust laws by discouraging merchants' promotion of rival cards, in win for firms like Amazon operating in “two-sided” markets  —  The Supreme Court upheld Monday a lower court ruling that American Express didn't violate federal antitrust laws …

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