Knowledge isn't exactly a "have or not have" prospect, anyway. One of the greatest killers of businesses is relying on the wrong knowledge, in fact. I think Christenson said it best in Innovator's Solution: what the business thinks it is selling the customer is rarely what the customer is buying.
Case in point: would you argue that somebody who is dedicated to the study of the technology and workings of cars would be able to accurately predict how well a car would sell to the masses? If so, why? There is almost zero correlation between what a car is capable of and how successful it is on the market. The most popular cars that sell the best are the ones that car aficionados tend to consider inferior to the more expensive (and more capable) alternatives. From their perspective, success should be based solely on the merits of the car's horsepower, handling, and so forth, not on how affordable it is for what it does, let alone how well it does jobs besides driving very quickly, having excellent handling, and so forth.
To sum it up: just because you know about something doesn't mean you understand anything about how or why it sells (or fails to sell). In fact, being overly knowledgeable can be a liability, as it often blinds one to the bigger picture of what job people hire goods and services to do for them.
Sky Render - Sanity is for the weak.