I've worked at places like they. They did have a self-service app store you could use to install things. It also had an approval system for anything that cost real money for a license. Excel was the bread and butter for many engineers for a long time to make functional tools. The great part of Excel is you could make little GUIs with the tables, not exactly QT, but you could have labels and textboxes. We regularly used a tool up until 2020 that was originally created in Excel 97.

MATLAB was the runner up for our tools but the good part about Excel was that every PC had it whereas MATLAB wasn't and also needed network access for the license (or else your program/department had to buy a node license). Later, many people switched to python since not everyone loves MATLAB and it's more of a real software language (and it's free) than what's effectively a very expensive calculator.