There are even developers who do not learn to touch type. Baffles the mind.

Making Caps Lock an additional Ctrl, and using Emacs keybindings (supported in nearly every IDE and on many command lines) makes one even more productive, because your hand doesn't have to travel all the way to where the arrow keys are. (A similar thing can be said about Vi keybindings.)

It is a strange phenomenon that many people do not wish to invest a few hours to make their lives easier later on.

It baffles my mind that a lot of schools don't even offer keyboarding anymore. I took it in high school, and I was fortunate to be born late enough that being male wasn't a barrier (only girls could take it when my parents were in school) but early enough that they offered it at all. Out of all the skills I learned in high school, it's probably the one I use the most.

It takes way more than a few hours to get used to a new setup like that when you're already very proficient in something else (like using arrow keys).

As for Caps Lock, some of us have good reasons to have it mapped to something else that needs to be done frequently, e.g. switching keyboard layouts.

Yeo. I map capslock to Esc and use vi bindings.