Here David Warsh speculates on what the new chapter of the Amazon-Walmart rivalry means. Is it good for cities? Is it good for suburbs? Both? The urban vs suburban distinction is no longer useful. Both contain niches and a variety of situations and opportunities.
Here Russ Roberts and his colleagues discuss emergent orders. Mike Munger mentions that cities are emergent orders. Of course. The complexities and the stakes are too great to imagine any other way. Higher high-rise buildings are seen in major cities all the time. It's partly better building technologies (supply) and partly the benefits of location (demand and agglomeration). But it is not "a return to the cities". Think complexities and niches, not urban vs. suburban. The cliche is that cities change slowly. But many people now choose neighborhoods that do not fall on either side of an urban-suburban divide.
A Whole Foods or similar enterprise can serve any of them. Holman Jenkins writes "Amazon Will Free You From the Minivan ... With his Whole Foods purchase, Jeff Bezos takes aim at groceries -- and car ownership."
Stratechery argues that Amazon with its high-fixed-cost delivery infrastructure has actually bought a customer, Whole Foods and its shoppers.
It's hard to know when and where there are substitutes or complements. Order on-line or walk/bike to Whole Foods to see/touch/feel the melons but have them shipped home?