It is proven it was only ever a five-year project to offer scope for graft.

It is the same for US public-works projects, most especially urban tunnels and nuke plants. And, of course, military procurements. All perfectly legal!

Project management porn. Observe that many of the problems detailed may be ascribed to bureaucracy or logistics, and that the quoted solutions were essentially 'national security' flag-waving / spending more money, and supply chain adaptability. When you've done a project before and the only parameters changing are known, these sorts of strategies are viable. This is not the case when you are attempting to execute in a novel space where R&D is required.