As an expat, in modern usage, I have observed this as a US vs. Europe (or maybe vs. ROW) issue. In the US, IT is like networking and helpdesk, and in Europe, it is more the whole hw-sw-networking-development mass.

>Information technology (IT) is the use of computers to create, process, store, retrieve, and exchange all kinds of electronic data and information.

https://en.wikipedia.org/wiki/Information_technology

It sounds like you're getting your definition from what people think an "IT department" is in a regular business. IT is an old-school name that encompasses far more than you describe.