How they do it: Lego parts allow individual recombination of the parts. However this recombination is only possible with other official Lego parts and no other toys. This leads to a lock-in for customers, as the size of an existing Lego collection determines also the value of new Lego products, as the recombination possibilities are increasing.
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How they do it: Once a customer owns a Nintendo console, the only games compatible are the ones licensed by Nintendo itself. This means that Nintendo generates additional revenue with every game sold. It is generally not possible to run 3rd party games on the console which are not certified by Nintendo.
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How they do it: With purchasing Sega Dreamcast, a video game console system, customers were locked into the particular ecosystem of controllers and video games. Competitors’ video games, for instance, were not compatible with the Sega system. Therefore, owners of a Sega-console were limited to titles released for its dedicated platform.
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How they do it: Gillette pioneered the system of single-use razorblades as consumables. By being the only manufacturer of razor blades compatible with its razors, customers have no choice but to buy Gilette’s razorblades once they own the razor.
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