I work closely with IT departments within such companies through ERP implementations/localizations and can coroborate this. In my experience 9/10 non-tech companies with their own IT departments(1+ person) don't value and especially don't understand what their IT department does.
On the other side, the people working within such departments are in my experience just terribly bad at sticking up for themselves, and explaining what needs to be explained. They don't draw lines where lines need to be drawn and they see themselves in the same way as the management/leadership does.