> However, the MoU also allowed for the use of proprietary charging interfaces, and one such solution continued to be used (and still is) by a major mobile phone manufacturer, thus preventing full interoperability. In addition, the MoU never addressed the environmental issues arising from the continued existence of those different charging interfaces and charging communication protocols.
So the reasons are:
1. We want everyone to do the same, no exceptions. In particular, we don't like Apple and the lightning standard.
2. It's better for the environment.
Now, 2. is clearly wrong, as now just all the people already in the Apple ecosystem need to switch their lightning equipment to USB-C equipment, adding tons of waste.
And 1., well, is no reason at all. It's how you successfully stop innovation.