This gives me some cognitive dissonance. On the one hand, having a common connector will reduce waste and be much more convenient (eg "Hey have you got an iPhone charger?") and make losing a charger a cheaper mistake. On the other hand I'm not sure I like the idea of government mandating electrical connectors on devices, which could stifle innovation, or be very shortsighted in the typical government-rules-on-tech wa…
You seem unaware that the government regulate a LOT of things and while this has stiffed some innovation, the cost is probably worth it.
When was the last time a house burned down due to electrical issues? In the past, prior to standards this was rather common.
If you want a general understanding of what things were like prior to "regulation".
https://en.wikipedia.org/wiki/Knob-and-tube_wiring
Now ask how you would plug an appliance into this mess...