"Thatcherism" does, however. It is a warped [Ayn] Randian view of capitalism and those who drive it. State intervention into the machinery of capital, even when it comes to essential infrastructure, is considered a corrupting influence.
Nobody able to change national policy within Downing Street or even ministries in Whitehall, at the time - or since - has had the gumption to say it's not working and we need to do something about it.
You are however right, that NIMBYism has also worked remarkably well - the planning process in the UK is the reason we can't build HS2 cheaply or quickly, and that is relatively painless compared to wind farms, solar farms (also often blocked), never mind building a dam and flooding an entire valley, which was the old way of creating new capacity.