Meta buying Stilla is a distribution bet, not an agent bet

The obvious read is that Meta wants better business agents. I think the more important part is where the agent lives. Most agent products still ask a company to adopt a new inbox, dashboard, or seat. Meta already owns the surfaces where millions of businesses talk to customers. If it adds shared agents there, distribution is solved before capability is. But customer messaging and internal company work have very different trust problems. A commerce agent can be scoped to a catalog, policy, and transaction. A shared company agent has to answer harder questions: which teammate asked? which private context can it use in this channel? who approved the action? where does the durable state live after the chat scrolls away? That's why I don't think "agent inside messaging" is enough. The moat is the permission model + shared memory + receipts around every action. Messaging is just the entry point. Curious what people think Meta actually bought here: agent capability, enterprise trust, or a shortcut to understanding shared-agent UX?