Earlier quoted context omitted.
RE rapidly completed projects A primary driver of the 'slowness' is a major focus upon safety in the workplace. Take a look back at the death rates per 1000 workers for some of the historical projects that people often like to point to and then look at a modern project. The second element is that these safety elements are often enforced by regulation. For example, look at how much extra scaffolding is in use today du…
The construction and infrastructure boom in China over the past few decades suggests major projects can still be completed rapidly, even in spite of widespread corruption. Political will can be an important driving force for pushing through major projects, but the most impressive feats of engineering are seen when there is substantial pent-up demand in an economy that can suddenly be supplied, usually due to social o…
How much is unreported?
This isn't to say this doesn't happen in western countries but it is less common. A large number of deaths was also associated with the Qatar world cup for example.
Look at the public reports of engineering and manufacturing companies. How many of them have a "target zero" approach to safety and report the TIFR as a key KPI? I've known executives in engineering organisations to be fired for persistent safety breaches making them substantially more risk averse.
This all costs more money and takes more time and I would posit that if China/India/Africa become wealthier and more individualistic then their construction rates would also slow.