Most organisations know roughly how many impressions they serve and almost nothing about what those impressions are. Position, viewability, context, audience and scarcity are not described, so every unit is treated as interchangeable.
At the same time, real inventory sits unused: newsletters with high engagement and no advertising model, screens in owned buildings, event and sponsorship slots, audio positions, and commerce surfaces nobody has counted.
Once supply is defined, everything downstream becomes possible: pricing with intent, packaging into products, protecting scarce positions, and explaining to a buyer exactly what they are getting.