The problem with the USB-C standard is that USB-A now transcends far beyond the personal computer industry. It's now a power adapter standard for mobile phones and all sorts of gizmos, gadgets and accessories for the home and car. USB-A isn't going anywhere for a long time.
I don't think that's true. USB became ubiquitous because literally every PC included it after 1998. Yes, it might have helped that USB also worked with Macs, unlike previous connectors.
In many cases it's arguable whether Apple forced a change or it was a case of Apple "skating where the puck is going" and doing something that was inevitably going to happen given time.
Similarly, if Tesla never existed the electric car would still have been an inevitability. Perhaps it would have taken another decade to emerge. Perhaps two decades. But it would have eventually. On electric propulsion, Tesla is most definitely just "skating where the puck is going."
In both cases—Tesla and Apple—they're not just skating where the puck is going, they're also in control of the puck, even if only a little bit.
[0] And thinking about it further, I shouldn't have conceded the assumption that USB's dominance was inevitable. It seems that way in hindsight but was it really? It could have fizzled like Firewire. It is entirely possible that new incremental standards—perhaps an ultra-fast nine pin serial port protocol—could have filled the gap before another connector emerged to dominate.
Often these technologies are stuck until there is a first big adopter. Now Google, Apple Macs, and most of Android is behind USB-C for instance, there will be a lot more accessories that use it. Right now IMHO it is being held back mostly by cost - micro-usb and an A to micro-B cable are still the cheapest parts.
If the end result is that you can't tell if plugging into your friend's charger is going to blow up your phone (or video game console), I think USB-C is going to fall apart.
Apple isn’t quite big enough to force an industry change in personal computers.