Apple's a complicated story because they were arguably 2nd movers to some of the other early hobbyist PC entrants. But their history is so convoluted at this point that I'd hesitate to construct a narrative that wasn't book length at this point.

Agreed. After a long time in tech the first movers almost always get killed

In fact most people aren’t even aware of most first movers cause they shut down or get acquired and their tech get absorbed into some giant conglomerate