Doesn't matter. You asked when I was working with Macs and IBM integration. I told you, and explained the environment. You seem to be jumping around in order to nitpick against Apple - I don't care for an argument of that nature. I supported many different platforms; they're all just tools.
I did work in a unique environment. I had security clearance, and had to be careful with the data, particularly in interfacing to the state (CLETS) and feds. What I worked on was not average at all, much of it was in machine language or assembler. Besides the police, I also worked coding programs for fire departments - they have all manner of things to track from hydrants to vehicles. Also worked in payroll systems, tax collection, geographic systems, etc. Never for a bank. Also for hospital systems networked across country. Spec'd and built equipment racks and installed servers, installed and maintained routers, installed and maintained controllers and modems for large networks. 3270 dumb terminals were a minor part of things I maintained. In the early 1990s I transitioned to Novell server support, then NT and Windows server support as well as Lotus Domino database and SQL database support, although still building servers. Apple was just a very tiny bit of what I worked on.
In terms of understanding why Microsoft operating systems dominate business environments today, I think it does matter. I'm not looking to "nitpick Apple". I'm looking at the history of events, decisions that were made at critical junctures, and what the long-term consequences of those decisions and events have been and how they've shaped the situation as it stands today.