Gillette

When King Camp Gillette patented the disposable safety razor in the early 1900s, the core product — a razor handle paired with cheap, replaceable blades — was a genuine engineering improvement over the dangerous straight razors most men used at the time. But the business model built around it is what actually made Gillette's fortune, and became one of the most copied strategic ideas in business history.

Gillette priced the razor handle itself low, in some tellings closer to giving it away than selling it, especially in early bulk deals with the US military that put razors in the hands of an entire generation of soldiers. The real profit sat in the blades — a low-cost, disposable product that every razor owner needed to keep buying, week after week, for as long as they kept shaving.

The insight wasn't really about razors. It was about where value could be captured across the entire lifetime of a customer relationship, not just at the moment of a single sale. A one-time purchase generates one transaction. A durable handle that only works with proprietary refills generates a purchase every single week, for years, without Gillette needing to win the customer over again each time.

The pattern became a business-model template used far beyond shaving — printers sold cheap with expensive ink cartridges, game consoles sold near cost with profitable game sales, coffee machines paired with proprietary pods. The product people see is often not where the money actually gets made. Sometimes the real business model is hiding one layer behind the thing on the shelf.