It's a fundamental, cultural and systemic lack of concern for those issues.
An 'afterthought' that should be 'integral'.
That Gates did not realize that means it's 100% on him.
1000% actually.
He was struggling with the language of design and usability in 2003, not even realizing even the implications of what he was seeing (because it would require total rethink).
Like a cars coming out of the factory with missing parts ... blame it on the guy on the line?
No. Something is deeply wrong.
I really like Gates - but it's beyond shocking how these cultures work and how myopic they are.
I worked for a Fortune 50 - and it's pretty amazing to watch how an army of actually smart people with 'one eye' can be so competent many ways, but blind in others.
I don't like to put Jobs on a pedestal but obviously this is something he understood (even then with gaping holes).