Got my parents a new computer for Christmas. I didn’t feel like acting as their 24/7 tech support so I let it with the Windows 11 that it came with. Yesterday they couldn’t get their webcam and microphone to work at all for our weekly family videocall. We ended up having the videocall on Signal. I believe they would face less troubles with Debian at this point.

Not sure what you mean by “collaboration”. If your are talking about working on documents, spreadsheets, calendar, slides, with your coworkers, sharing, manage access, etc. Google does that pretty well. My company uses everything Google for many years and it’s very good from this perspective. It works absolutely the same from any operating system, Google Chrome is the OS at this point. I am not saying that Google is better than Microsoft as a corporation, just saying that Microsoft has legitimate competitors on the office collaboration market.