As a weekly flyer, I call triple BS on this one. United employees could care less about the customer. It would take effort and movement on their part to actually do something for the United customers other than be rude and act put out by any questions.
How much less could they care?
The airlines pass the costs from lack of resiliance, negligence and insouciance on to their customers in terms of lost time and wages, and incurred incidental transportation, hotel and meal costs.
Just another form of crony capitalism.