[sancarn]

To be fair, as an SME, I do have documentation and an architectural overview. In my experience when I have provided these, they have been ignored anyway. I do not have access to git, because why would IT give me something useful? I think many users would use git purely as a VCS if they had access, but nope...

It shouldn't be a spreadsheet. The IT departments should democratise the tools which devs use, so even end-users can use modern tools for the job at hand. Then popping a user-made tool into your processing pipeline would be fair enough, and code can be collaboratively maintained. In the end, just as IT wouldn't want SMEs making changes without their knowledge, SMEs wouldn't want IT changing their core system without their knowledge either.

In my opinion, the more people who know and understand the core systems, the better.

Edit: for what it's worth, I do use github (https://github.com/sancarn/stdVBA), but you won't see nearly any versions of any corporate codebases, why? Git doesn't work great with VBA spreadsheets at all. I'm not going through a 10 step process to upload the updated file to the github repo every time I update a macro in a spreadsheet. This is why on-board git is important.