One of the bitterest conversations in medium-sized electrical equipment companies occurs after a project is lost despite prescription won months earlier. The brand specified by the designer was never purchased. Instead, the installer or final buyer chose an equivalent alternative, frequently cheaper. Technical prescription, won with time and effort, was lost in the last kilometre.
Technical prescription fixes the preferred brand in the specification. Actual purchase, in many projects, occurs months later, when the installer proceeds to buy from the distributor with a margin of discretion that the designer does not control. In that interval several pressures operate simultaneously: tight contractor budget, installer preferences with his usual distributor, immediate stock availability, specific conditions from the alternative manufacturer.
The result is a substitution rate that most manufacturers document vaguely and rarely attack systematically. The company that won prescription assumes the project is closed and reallocates resources. The substitute company enters precisely in that gap with specific discount and immediate availability. The outcome is decided in an on-site conversation that the prescribed manufacturer does not witness.
The reasons for substitution are bounded and recognisable. Perceived cost superior to the equivalent alternative, without documented operational justification. Lack of stock within the works timeframe, which opens the door to the competitor who does have it. Absence of operational relationship between the prescribed manufacturer and the final installer, whilst the competitor maintains that relationship. And, frequently, lack of subsequent follow-up by the prescribed manufacturer, who delivered documentation to the designer and disengaged from the rest.
The reverse pattern is viable. Companies that maintain high conversion rates between prescription and purchase execute an explicit defence system that operates during the months between award and order. It is not passive commercial follow-up. It is an active sequence of contact with the installer, the installer's usual distributor and, where applicable, the main contractor.
Three components define a functional defence system. A living database of prescribed projects with estimated works timescales, assigned responsibilities and alerts at the moment of award. A contact mechanism with the awarded installer as soon as the works are closed, before the competitor arrives. And an operational support policy (stock, timescales, training) that reduces friction for the installer and converts prescription into actual purchase.
The frequent error of the medium-sized manufacturer consists in operating with two disconnected commercial teams: prescription and works. The first wins the project. The second does not learn of the victory, does not receive follow-up, does not act with the urgency that the substitution window demands. The consequence is that prescription falls and management reads as loss of share what is in reality internal process failure.
The management committee has three concrete moves. Integrate prescription and works into a single account management system, with shared visibility and joint metrics. Establish automatic alerts at the moment of award that activate specific commercial defence sequence. And build an analytics of conversion rate between prescription and actual purchase, segmented by project type and geography, that makes visible an indicator that today remains buried in aggregate billing.
Quantifying prescription won without measuring prescription defended is counting incomplete victories. A good part of the effort invested in the design office is diluted in the following months because no one in the organisation is specifically charged with protecting it. That charge, formal and measurable, is what separates the manufacturer who prescribes much from the one who effectively sells what is prescribed.