A GEO program is four spending lines sharing one name: technical work that makes pages retrievable, on-page work that makes them usable once retrieved, off-site participation where engines quote, and a measurement cadence that says what any of it did. Stopping means choosing which to switch off, and the honest default stops the content and off-site lines while keeping the measurement, the cheapest line and the only one whose value survives.
That sets the evidential bar. Retiring one prompt from a panel is routine, reversible and free, and has its own rule in when to retire a prompt. Ending a program closes a budget line and withdraws a claim the company has been making about itself, and it is the one decision here you cannot cheaply reverse, because a baseline you stopped recording cannot be rebuilt. A decision that asymmetric deserves more evidence than anything inside the program, not less.
Two neighbouring questions stay out of scope. What goes wrong while a program runs belongs to program failure modes, where every item is a fixable defect rather than a reason to end anything, and which quantities have no instrument is settled in what cannot be measured. What is left is the decision to end.