Meta Platforms Inc. won a key lawsuit Tuesday after a federal judge ruled that the company’s acquisitions of the photo-sharing app Instagram and messaging service WhatsApp don’t violate US antitrust law.US District Judge James Boasberg in Washington said the Federal Trade Commission failed to prove the deals allowed the tech giant to illegally monopolize the social networking market. “With apps surging and receding, chasing one craze and moving on from others, and adding new features with each p...