Obviously Naim crossed my mind but I wasn't thinking of them.
You were thinking wrong though. Apple used standard buses when it could, but often preferred their own designs because they simply worked better.
Take ADB for instance. Computers were pretty flaky back then, and when the processor was choked up with some race condition or other the freezing of mouse and keyboard was frustrating to the target market (appliance users). A bus which didn't depend on co-operative time-shared resources was indeed more satisfactory. It was only replaced once processors were fast enough and multi-tasking was at least this side of the horizon. Several generations of Apple laptop had USB ports but still relied on ADB for keyboard and mouse input. It was a long way ahead of its time. Finally when USB was viable they switched. That's how Apple got a reputation for plug and play instead of plug and pray.
Another case in point is Firewire. There simply was nothing like it at the time. SCSI absolutely sucked as a bus back then. It was inflexible, and I'm not just talking about the cables. In the nineties there was one smart way to speak to scanners and especially video cameras: Firewire. It was hot-swap, plug and play, daisy-chainable (63 devices with no slowdown!), independent of CPU, very high bandwidth at the time, and allowed simultaneous access to a resource from multiple clients as well as simultaneous tcp/ip and it didn't need termination. It's superb tech, in many ways still superior to the Johnny-come-lately fast USB's. Firewire was the killer app of the original iPod, because you could bear to load music onto the device without waiting for hours.
In my office I have an old Apple monitor which gets all it needs from one cable which clicks neatly into the back of the Mac. No separate power or USB lead. It's neat. Sadly Apple has been forced to adopt the spaghetti junction method now for the sake of compatibility with far less ambitious standards.
Apple offered Firewire as a standard with a very meagre license fee considering the quality of the invention. It wasn't the license fee that killed Firewire, it was the Windows world's obssession with the cheapest possible hardware. People don't implement Firewire because it costs a few bob to put in a bus controller. Meanwhile desks are cluttered up with crappy USB 'hubs' and endless gang power sockets.
Compatibility with more standard clunky busses has always been available on the Mac platform. Anybody saying that Apple uses busses to monopolise simply doesn't know her tech history. If they'd been interested in proprietising they would have behaved like Sony and introduced iLink: somebody else's bus hobbled by copy protection.
Finally, it was actually the iMac which put USB on the map. USB was languishing on the unloved inventions pile while the IBM-compatible industry stuck with the godawful parallel port standard, because nobody gets fired for choosing IBM.
Seriously, misuse of non-standard busses and connectors is not a complaint you can level at Apple.