https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#CEE...
Non-ancient sockets in Italy are _bipasso_, meaning they accept both the 16 and 10 A variants of the Type L, and the 10A variant is compatible with the Europlug, making it really a non issue. In households you'll also likely find Type-L compatible Schuko (usually) sockets for higher power devices, or even combo sockets that can work as two _bipasso_ or one Schuko.
So in the end standardization ended up working anyway and no one is struggling because of this (also standards about wire gauges made extension cords safe to use)
We have the same sockets in Ireland, so the EU still has the same number of different standards.
To me, I don't see why government has any business in USB. Bluetooth maybe since it takes up the air. But USB? It's bad enough that wall sockets haven't improved. Will we be stuck with USB-C long after its natural EOL?
There's not much need for that, to be honest, at least not for Continental Europe where the Schuko plug system is dominant. It's reasonably secure against children and offers enough capacity for all household loads, and industrial applications have all converged on the bulky IEC-60309/CEE-17 plugs.
Sometimes, a product is simply "good enough" and does not require further improvements (or alternatively, a better solution exists, but the cost for retrofitting is prohibitively large).
When USB-C outlives its usefulness there won't be any ready-made standard for the legislation to switch to. Or at least if there is such a standard it won't come from the EU, or any other jurisdiction with similar regulations. Why would anyone develop a new standard for mobile devices when the law says they have to use USB-C? There are more profitable ways to spend the limited R&D budget than designing new ports which you might not ever be allowed to use.
Besides that, whichever organization is behind USB is the obvious candidate. A new standard that's backwards compatible with the old one (because that's what consumers are likely after) except for the connector is best made by the org that developed the previous version of it.
In what way, spesifically? What can you improve in a metal connector carrying current?
And at least in the US I believe the regulations are local building codes
For example we have this thing called the NEC. It's a private document owned by a private organization. It's named the National Electrical Code. It applies absolutely nowhere. Every single jurisdiction either uses an outdated copy or so heavily amends it that it prevents anything ever resembling standardized electrical construction. Every single electrician must be a total master of his own local "National Electrical Code".