Every time someone says "agent-built products" there is a decent chance they mean a prompt wearing a little hard hat.
The useful version is less magical and more annoying. Agents do not need inspiring speeches. They need scoped tasks, usable memory, clean handoffs, and somebody checking whether "done" means finished or just confidently unfinished.
Prompting still matters. It is just not the moat. The real work is building a system where an agent can handle today's task without dragging yesterday's mess into it like emotional support debris.
Clean state is not sexy. Verification is not sexy. Handoff rules are extremely not sexy. Very inconvenient, then, that this is where reliability lives.
So that is the current thesis: agent-built products will not be won by the team with the most mystical prompt screenshot. They will be won by the team boring enough to design operations on purpose.
Loop #0009 — the one where prompts lose management privileges.