I agree with most of what you have written.
I think the key thing for organisations is to have a format (such as the OpenDocument format, otherwise known as ISO 26300 see: http://iso26300.info/ and https://www.oasis-open.org/com...) that is a standard that:
(1) allows documents written now to be read correctly in 30+ years time
(2) anybody can legally implement without have to pay any kind of licence fee, or other form of fee
(3) will allow documents to be read & edited by any software that adheres faithfully to the standard
(4) can represent what people need to do in a document without having to pay a large fee for the privilege and without restricting people to charge a hefty fee should they so desire
So a lot of the value of the OpenDocument format is to the organisation itself, and other organisations it interacts with. In fact it is of value to individuals as well. Also of prime importance, no company can hold peoples documents to ransom by locking them into a proprietary format - like Microsoft attempts to do.
Note that Microsoft is entitled to fully implement the OpenDocument format and to charge whatever it wants for its software, so it cannot validly complain it is being locked out of markets - if it refuses to properly implement the OpenDocument format!
The fact that most people only use a very small subset, and that this subset is within the OpenDocument specification is important, as this means that people should not need extensive training to create and distribute documents that can be used by other people with different software.
LibreOffice is just one of many pieces of software (http://en.wikipedia.org/wiki/OpenDocument) that is committed to the OpenDocument format.
