Three frontier lab CEOs just spent weeks arguing for pacing the race to superintelligence. The White House said no. Then Mark Zuckerberg posted a long explanation of why no agreement was ever necessary, because market incentives already handle safety on their own. A pacing agreement between competitors is a cartel, and cartels only hold when someone enforces them. The moment Trump declined to play enforcer, the agreement was dead, because the first lab to defect captures everything the pausing…