The availability of alternative commercial keyboards is possibly not the best metric to use to judge actual need/desire. There are a large number of non-ASCII layouts that can be mapped on top of a standard QWERTY[0] which show that ASCII is not a valid assumption for a modern general purpose programming language.
The idea that we should all be grateful for the unification that using one language brings is a sentiment that reinforces the idea that this is cultural imperialism. There are definitely benefits to conformity, no doubt, but imposing it unnecessarily is a design decision that should be questioned. Why take away options from people who might value that freedom?
[0] - https://en.wikipedia.org/wiki/Keyboard_layout#Keyboard_layou...