Prefacing this question with the fact I'm an Android user and have never owned an iPhone. Saying this in the hopes people won't think I'm an Apple fanboi trying to make a point...
I haven't been that interested in the EU legislation around this until now; I'm curious what happens when something comes out that is better than USB-C? Are companies stuck until new legislation is passed or is there some sort of auto update to the standard written in?
Subjectively.
Like most things, it is about preference and/or what the measure of success is. Some people prefer the tighter, mixed-use concepts and some don't. I know people that would love a concept like this and I know people that would be overwhelmed and depressed.