Generally speaking, any software development activities I perform on my company issued laptop can be interpreted as belonging to the company without prior agreement. If I was using my own machine - it's likely the company would try to enforce security policies on it, or claim ownership of anything I develop on my hardware. While I am not a lawyer - Given the shrink-wrapped nature of such contracts, it's likely an employee could challenge this in court.
So yes, they should be providing an office suite whether that be Office365/ Libre Office / etc.
It's much the same as using my own home to work in. If they were required to provide me with an office, and I had to use it, whatever benefit there is would not go to me.
Why? Skilled tradesmen frequently own their own tools, and many wouldn't have it any other way. You can bet your ass many of them have spent an order of magnitude more on their tools than a few measly software licenses ($20 for a text editor? Extortionist! But a cheap cordless drill costs several times that...) In California, employers are only required to provide the tools necessary for a job if they're paying you less than twice minimum wage, a bar you surely clear.
Software developers who work as independent contractors generally own their own equipment and software (in Australia that's actually one of the legal criteria for determining whether someone is a contractor or an employee for taxation purposes).
Whereas employees generally use company-supplied hardware and software, which is to the employer's benefit as they have full control over it.
But that's really by the by; whoever is procuring software to be used for commercial purposes, it is reasonable to expect they would purchase commercial licenses to help fund the development of their tools.
I can't imagine how security and privacy are of no concern. Has that been cleared by legal? Or is it laziness and/or negligence?
I trust you're not being malicious, and I trust that you're not trying to be insecure, but software is a complex world now.
This isn't about trust or not. It's about liability. It's about accountability. It's about reasonable expectations. It's about making sure you're not putting your team in a compromising position. It's about not assuming.
If LibreOffice doesn't like this use, they can change to a less libre license. That's the point of proprietary and mixed licenses.
So a spreadsheet file gets passed around, usually from a client, and we're just expected to figure out how to read it. Those of us without MS Office already installed for something else usually install LibreOffice, including me.
Is the business doing something wrong here? Should they buy us all copies from Redhat instead of leaving it to us? Am I doing something wrong by using the free version for my enterprise work? Should I pay for a copy out of my salary?