Earlier quoted context omitted.
I think there are two factors at play here. 1) We have the curse of being first. Our cities are old so our infrastructure is old. 2) We can't just say, "Your land is ours, get the fuck out, construction begins in one week" They can also cut corners on safety and pollution. The ends always justify the means.
The US doesn’t really have problems cutting corners when it comes to safety and pollution as well. For safety, look at the standard US power outlet and compare its safety with practically any other outlet in the world, of which all of them are considerably safer (albeit at the expense of being more complex and/or larger). For pollution, look at the current US Government actions.
You judging the U.S for something they did first is only proving the point. It'd be great if we could up our voltage from 120 and change the plugs, but after a point it's just too expensive to change. And it's not as if tens of thousands are dying due to 3 prong outlets...