Apple have embraced USB-C in a big way. My MacBookPro has 4 of them and nothing else. It’s great at the office as a single USB-C cable does video, audio, data and power (via a USB-C hub). It’s a total pain in the backside on the move, if you forget the adaptor/dock.
The iPads have already gone USB-C and so have most high-end android phones. Once the iPhone gets USB-C, I think it will become ubiquitous pretty quickly. On the move a USB-A to USB-C is going to be necessary for a long time - no different to USB-A to Lightening/Mini-UUSB/Micro-USB today, I suppose.