Apple was a key member of the USB-C consortium, it was always planned to be their universal connector. They waited on switching to avoid public backlash about "why are you switching wires when I already bought all of these wires?". They generally give connectors 10 years before changing them (see 32-pin 2003 - 2012 etc). Doesn't invalidate your larger point, but it incorrectly describes the history of USB-C adoption by Apple.