A forecast extrapolates the past, which is the right instrument for planning capacity and for setting a baseline. A decision is a change, and the past holds no version of that change to extrapolate from.
Causal models estimate the effect of an intervention. That is what lets them rank levers, attribute a movement to its drivers, and separate what your team did last quarter from what the market did.
Cost is the reason this has not already been standard practice. Conventional causal discovery scales badly in the number of variables, so it has been rationed to a handful of expert-run projects a year. RootCause.ai runs discovery at sub-quadratic scaling, which is what makes thousands of models practical instead of a few.