1. Every software needs resources to be maintained and improved. Those resources finally will need to be paid for by someone.

2. Getting Linux and LibreOffice does not get you a functioning productivity environment. You still need mail, calendars, shared document storage, web conferencing, security etc. There are various levels of usability in those and on basic levels you could get those already 30 years ago mostly. But not on a level, where you could reliably have your workforce be flexibly working from home.

So, let's see how it plays out, but it is not making life easier for the IT admins I guess...