I think we might be backgrounding one particular reason too much: customers are a headache. One of the subheadings of the article is "They're just yelling the entire time".
I find it interesting that this hasn't been discussed as much, maybe because we are culpable? Maybe at one point of time we were that high maintenance customer? Maybe there is a general culture problem we all have regarding how we treat strangers, especially those who are bound to serve us to an extent. And looking at that need for transformation might be hard on our ego than the transformation of structural non-industry-specific inequities.