Your keyboard is not my keyboard, nor everybody else's. So I hope you see how US-centric your view is.
Before you hurl incorrect accusations at others, check out how international keyboards look. All have QWERTY-like (in some cases AZERTY etc. but still similar) layout as a BASE, and the local characters are on top of that. Yes even in China, Japan, Russia, Greece, Bulgaria, Macedonia and so on.
This is why languages center around this charset, and why it'll stay like that.
But not the Latin charset as the single one that can be entered. Let's pick a random one on your list, Russia for example. Funny thing appears, it's clear that you haven't visited Russia for example, hint: Cyrillic on keyboards. Shall we continue? ASCII is not the world's default and never should be.
And incorrect? No, maybe I should've just said narrow-minded instead of American.
How exactly do you think someone, say, in Russia, types their Gmail address in a form?
I feel you're the one accidentally revealing US-centric views.
> How exactly do you think someone, say, in Russia, types their Gmail address in a form?
They switch their keyboard to Latin, from Cyrillic. They probably prefer mail.ru though, because of such stupid limitations.
Nice try though.