Another example is Firewire. Like MagSafe, Apple invented it and it was a big step up from previous hard drive connectors, at a time when USB was thoroughly inc

Another example is Firewire. Like MagSafe, Apple invented it and it was a big step up from previous hard drive connectors, at a time when USB was thoroughly incapable of high speed. Then like MagSafe, Apple cancelled Firewire and they did so before USB was fully able to replace it. That's no longer true today, but for a few years it was difficult or impossible to attach a hard drive at full speed to a Mac.