Cross-subsidies are a very important change. The ability to communicate anonymously is an enormous new capability. A lot of people are embarrassed when they buy things. A lot of people don t want to reveal their identities. A lot of people would like to just not give their names but still shop, still interact.
Anonymity is a very powerful social force.
People who want to go slow can go slow, and people who want to go fast can go fast. Most people want to go slow, by the way. They can t go fast, but they don t want to be embarrassed because of it. Most of the world is seller-driven. As a buyer, you have to decide which of the sellers choices you want to take.