BRUSSELS :German online ticket marketplace Ticombo has filed a complaint about the International Olympic Committee to EU antitrust regulators, alleging the IOC's ticketing rules block rival resale platforms and are anti-competitive. Companies and athletes have increasingly turned to the EU antitrust watchdog with grievances about the power of sports governing bodies in recent years, alleging they abuse their dominance in breach of EU competition rules. Ticombo said the issue is what it alleges