The essay suffers from Ted-talk disease: lots of grand gestures and bromides, not as much rigorous thinking. The underlying problem is an important one, however. A little-discussed solution to this problem is one I would like to see tried, distributism: https://en.wikipedia.org/wiki/Distributism A book I am currently reading (and enjoying) on it is: https://www.amazon.com/Toward-Truly-Free-Market-Distributist...
Nonsense. Our abundance is increased by specialization not a lack of it. Specialization and trade allow for higher-order goods to be used as inputs to produce lower-order goods. Farming doesn't just require a tractor and some land. You need fuel to run the tractor, other industries to come together to make the tractor, a merchant to purchase the tractor from, and on and on.
It does not follow that owning more things related to a trade will produce more things. The opposite is the case, it's cheaper for the farmer to buy the tractor than produce tractors himself.