Curious if you have any insight as to why Americans in movies always boil water on the stove top?
Australian here and we use electric Kettles. I assumed it was a 120 vs 240V thing.
Again, ubiquity. Especially since the vast majority of Americans who make coffee at home do so in drip coffee machines, there just isn't a lot the typical American is needs to heat up hot water for, so to most people an electric kettle is a non-mandatory item. Even most American tea drinkers honestly aren't daily tea drinkers (myself included), so for many the benefit of having extra counter space beats out the benefit of having convenient hot water, and a stovetop kettle can most easily be put away in the back of a cabinet somewhere.
The people that don't have kettles don't drink tea. Pretty much everyone I know who drinks plenty of tea have kettles, and everyone knows that they're an option.
Well considered it was only 5 days ago that I made this comment, you successfully clocked me as a tea drinker and you might be on to something with your theory.