Ben Evans is one of the tech commentators I follow. This para from one of his blog posts struck me:

First, ecommerce, having grown more or less in a straight line for the past twenty years, is starting to reach the point that broad classes of retailer have real trouble. It’s useful to compare physical retail with newspapers, which face many of the same problems: a fixed cost base with falling revenues, the near-disappearance of a physical distribution advantage, and above all, unbundling and disaggregation. Everything bad that the internet did to media is probably going to happen to retailers. The tipping point might now be approaching, particularly in the US, where the situation is worsened by the fact that there is far more retail square footage per capita than in any other developed market. And when the store closes and you turn to shopping online (or are simply forced to, if enough physical retail goes away), you don’t buy all the same things, any more than you read all the same things when you took your media consumption online. When we went from a corner store to a department store, and then from a department store to big box retail, we didn’t all buy exactly the same things but in different places – we bought different things. If you go from buying soap powder in Wal-Mart based on brand and eye-level placement to telling Alexa ‘I need more soap’, some of your buying will look different.