Probably that was the reason why Apple did not have the courage to do so, but it is obvious that it creates additional value for some people. Especially designers and illustrators, I think.

Also relevant to any student that does math and has to write equations (every person in the 1st world.)

Also relevant to every student who needs to read a book and highlight passages and annotate (every person in the 1st world).

Also relevant to every person who wishes to draw a diagram to communicate their idea (every person in the world).

I don't think it's a lack of courage preventing them. I imagine that they genuinely believe in the statement.