The main reason why they did it: No need to try 3 times (at least) which side fits anymore ?
The Average European Household has about 5 to 15 different charging devices with different connectors. At least so they say...
At my place we struggle to find Iphone cables as the kids have about 4 phones and can only find 1 or 2 cables...
Me and my wife we have Android devices, both USB-C, and about 4/5 cables.
Then comes BL Boomboxes, with micro-Usb, Cameras with either micro-Usb or sub-micro-USB, laptop, each with its own connector...
I even had an Iconia Tablet with a 12V/5V (rare) micro-Usb, that used the 12v as charging, and the 5V as Data connection.
Not to mention IoT devices, like arduino, that still uses USB-A/B...
So I can relate to this decision.
As for combustion vehicules, well, most of the cost you imply with electrical vehicules, are present also in combustion cars.
Also the oil mining cost are important factor.
I don't say I disagree with you... but here in France you can by a Fiat Panda Hybrid for about 30€/month... Yes Thirty euros per month....
And making electric car main stream, will have a negative effect on their prices, as they will no longer be a "luxury" commodity.