> Why should I care that Microsoft Office has more users than LibreOffice?
Because people are going to send you documents in Word format, and expect you to be able to send them documents in Word format. Including embedded objects, RTL text, animations, and many other features that LibreOffice barely support and do not transfer well between its own native format and the Word format.And all our customers often send us MS Office documents. They never use the fancy features.
I'm confused. Is FOSS is something more than someone or some entity contributing their time and releasing the source for for free? Does it really matter if thing doing the development is a a person in a garage or a company?
There doesn't seem to be a lot of difference to me. Both a people in garages and a company have kept their pet projects going for decades, giving away their efforts over all that time. Both people in garages and and companies have lost interest in open source projects. As an example Debian is one of the longest lived open source projects on the planet. It is a community drive development. To me it looks likely it will outlast Ubuntu, which is a fork that isn't community driven.
The central tenants that make FOSS work don't seem to have much to do with whether it's community driven or not. Both can succeed. Yes, community driven efforts can fail. But so can corporate drive FOSS, as WordPress may well demonstrate.
In practice, I'm going to be honest and blunt, it's never worked.
3 decades of trying to replace Photoshop with GIMP (founded 1995)? Barely a dent.
3 decades of trying to unsettle Windows with the Linux desktop (KDE, 1998)? Barely a dent.
3 decades of trying to beat 3D packages with Blender (founded 1994)? Finally working now, ironically only because corporations started getting involved. Before then, Blender 2.7 was never going to do it.
2 decades of Apache trying to kill Skype with OpenMeetings (founded 2007)? Not even a dent.
2 decades of trying to kill proprietary CAD packages with FreeCAD (founded 2002)? Not even a dent.
4 decades of trying to beat Microsoft Office with what is now LibreOffice (roots in StarOffice, 1985, which was ironically a proprietary corporate project for the first decade and a half)? Barely a dent.
The Linux community, and FOSS communities, overestimate their strength without corporate interests. They have none.