> The fear for a "lock-in" is completely unfounded, as the EU previously quasi-mandated Micro USB and switching to USB-C was no issue whatsoever. Besides, nothing is stopping manufacturers from including both USB-C and another charging connector.

If micro-USB was mandated, it would have prevent the use of the Lightning connector that I have quite enjoyed for the last 10 years or so, instead I would be stuck with the IMHO inferior micro-USB.