There are plenty of non governmental standards. Some like openGL or http are driven by industry consortiums. Others like keurig/Nespresso generic pods, x86 chips, or cup holder sizes are driven by compatibility with wildly successful products.
Edit: usb-c is both the former and the latter. Macbooks and ipads had already switched, it seems likely the next iphone would have been usb-c anyway, or perhaps portless.
Edit: usb-c is both the former and the latter. Macbooks and ipads had already switched, it seems likely the next iphone would have been usb-c anyway, or perhaps portless.