Because people have learned to live with them and the pain they cause is acceptably built into society. None of those things provide competitive advantage or a reason for consumers to switch.
For instance, few electronics travel outside the country where they're sold, and even for devices that do travel like cell phones or laptops, it's still easier to just buy an adapter than to choose a model based on its charging characteristics.
If something weird happened, like we all started being like Quantum Leap and the room we went to sleep in teleported to a new country every night, then the international plug problem might be worth fixing. But people would still probably just buy adapters as a cost of doing business and count on batteries to get them through the day. It just adds so little value.
For instance, few electronics travel outside the country where they're sold, and even for devices that do travel like cell phones or laptops, it's still easier to just buy an adapter than to choose a model based on its charging characteristics.
If something weird happened, like we all started being like Quantum Leap and the room we went to sleep in teleported to a new country every night, then the international plug problem might be worth fixing. But people would still probably just buy adapters as a cost of doing business and count on batteries to get them through the day. It just adds so little value.