Because neither of them could work out a way to make constant long-term profits from the automatically self-sharpening SR's that they secretly developed.Why did both gillette and schick discontinue de safety razors and opt instead for multiblade razors instead???
They made plenty of money selling the DE supplies, but our economic system demands not just revenues, but growth in revenues over time. The companies needed to find a way to bring in more money and the only way to do that was to take business from a competitor and/or sell a more profitable product. So, they created several series of proprietary cartridges and handles that the company could patent and attempt to "lock-in" a new group of consumers. There is a limit to the absurdity at some point, though.Why did both gillette and schick discontinue de safety razors and opt instead for multiblade razors instead???