Software didn’t lose its head. The head moved.

When the workspace becomes the cockpit, the rules for moats change. a16z named most of the new ones. There’s one more.

Salesforce went headless last month. a16z’s Seema Amble used the moment to ask a sharp question: if you strip the UI off a system of record, what’s actually left? Her answer is good. The old moats — daily UI habit, muscle memory, the undocumented logic that lived inside the interface — weaken in an agentic world. New ones move in: operational logic, network effects across multiple parties, data your product uniquely causes to exist, and ownership of the action layer.