20 years ago, most companies had proprietary connectors, because there was no standard. Then, slowly, they all shifted to USB Micro-B, which was acceptable, but limited charge speeds.
Once USB-C came out, it took a while for everyone to flip over. Heck, you can still find a few devices like headphones and flashlights that use USB Micro-B (or even Mini-B). But they all flipped because the demand was there and the technology standard supported what they needed.
Apple even flipped most of its devices over. They’re just dragging their feet on the iPhone.