Business cases boards reject.

Every quarter a retail media business case dies in a Gulf boardroom. The deck is polished, the market data is real and the revenue curve is borrowed from a market three years ahead and several structural differences away. A board member asks what the number assumes about fill rates. The room goes quiet. The project goes back for rework and loses six months.

The problem is rarely ambition. It is provenance. US benchmarks assume endemic advertiser depth, mature agency buying desks and monetisable inventory shares that simply do not exist here in year one. A model that imports them is not optimistic. It is wrong, and boards are good at finding wrong.

What a defensible case looks like

A case that survives scrutiny is built from assumptions the presenter can source line by line: what non-endemic demand activates first in this market, what genuine sellable inventory remains after suppression rules, what year one fill rates actually were on comparable Gulf launches. Conservative, base and aggressive scenarios, each with the conditions that make it true.

The case you present should be the case you can defend, line by line, under the hardest question in the room.

This is why RMAIOS models with assumptions calibrated on Gulf operating data rather than imported curves. The output is smaller in year one than the vendor decks promise. It is also the number that gets approved, funded and then beaten.