Chinese provinces compete fiercely with one another like divisions of a single company, since provincial leaders who perform well can be promoted within the federal government, and this drives both rapid infrastructure buildout and wasteful overbuilding like ghost cities.
Gurley explains that unlike US state rivalry, Chinese provincial competition is centrally adjudicated career competition, which drives hyper-fast buildout but also overinvestment and ghost cities.
transcript
Bill Gurley: because there's a singular government that's going to make choices, like in the US if you do well as a governor you might get elected. But in this case, it's more like divisions of a company and if you run one well, you might get the CEO job and so that competition, you know, leads to overbuild in certain cases.