Amazon’s ad business is bigger than YouTube and more profitable than AWS. Shein is the biggest fast-fashion retailer in the US, with no stores. US pay TV subscribers have fallen by a third. Where do ad budgets go, where does rent go, and how many brands will there be?

I like to say that I write about media generally and journalism specifically because the industry is a canary in the coal mine when it comes to the impact of the Internet: text shifted from newsprint to the web seamlessly, completely upending the industry’s business model along the way.Of course I have a vested interest in this shift: for better or... See more