The EU actually did regulate the voltage and standardized the acceptable tolerances for appliances, which is the difficult part. In the olden days, your French 220V appliance wasn’t necessarily guaranteed not to burn out if you put a British 240V through it.
I suspect that the cost of refitting every single house, office and appliance in several countries would be many orders of magnitude higher than the cost of everyone just buying their own travel adapter. It’s not like they’re that big a problem. Most hotels will lend you them for free, or have universal sockets.
The EU actually did regulate the voltage and standardized the acceptable tolerances for appliances, which is the difficult part. In the olden days, your French 220V appliance wasn’t necessarily guaranteed not to burn out if you put a British 240V through it.
That makes sense and is awesome. Since you went through that effort it’s weird you have different plugs
I suspect that the cost of refitting every single house, office and appliance in several countries would be many orders of magnitude higher than the cost of everyone just buying their own travel adapter. It’s not like they’re that big a problem. Most hotels will lend you them for free, or have universal sockets.