The key thing to understand about agents is that they are an AI with access to a computer: probabilistic LLMs leveraging deterministic computers to do computer things. When distribution became free, publishing became abundant and curation was scarce. With agents, the raw capability to execute tasks is becoming abundant; what remains scarce is human volition. While base models are substitutable commodities, agents improve with accumulated user context, and that persistent context becomes the dominant switching cost. stratechery.com