"How do we help more experimental cities get started?
It seems that the returns to entrepreneurialism in cities remain high: Hong Kong, Singapore, Dubai, and others, "
???
HK and to a lesser extent Singapore are some of the most inegalitarian places in the world, that thrive because they have established Western commercial practices in a sea of otherwise more obvious corruption. There is a very dark underbelly to HK.
Dubai is an Oil Rich state, with a fairly ruthless totalitarian leadership wherein the pay Indian workers 10's of cents an hour in a form of indentured servitude. An Arab Dubai resident could kill one of these workers and probably get away with it.
They also are nice places for rich people to hide their money.
There are no mysteries here.
Dubai is the 'anti civilisation' - maybe one of he worst examples of 'what to build'.
As for 'why some things are more expensive'?
Some things are commodities, some are not, some things have price inelasticity, some do not.
Why was the P43 made in a few months?
Because WW2 planes are very simple, and it was during war, and we didn't care about safety back in the day. 'Crash tests' for cars? We didn't even wear seat belts. No emissions standards. etc.. Most of today's projects are much more complex. It takes government 10 years to do anything because those systems are complicated, we have strong government unions, and a kind of civic dysfunction in many places.
The GDP is not consistent - it just looks like that in the chart.
The GDP naturally, is not going to change that much year over year - because we are largely engaged in the same patters of activity. But the rate of growth swings a lot. There is no mystery to solve here.