Just to be clear, power sockets are not standardized in the EU. Italy has different ones (Type L), France as well (Type E), and the UK too (but they are no longer ... you know) ...
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.