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.
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.