Open source is different to Free Software definitions, open source is a half way attempt at Free Software
not quite in tune with everything that is possible.
You need to embrace that free software is a global community of like minded users, willing to
constantly improve code. Here for example are those working on Debian today.
https://raphaelhertzog.com/tag/Freexian+LTS/
they are paid by Debian so Yes costing the researcher money., they do thisup to a set number of hours per month.
Typically they achieve 190 hours of work contributed by 13-14 persons.
Now try and find who or how many people are working on proprietary software - hmmm very hidden and unavailable hey !
Debian is just one operating system. Have a look at Linux Mint, http;//www.linuxmint.com and see what great work is being done
with 5 desktop versions, and you should fall off your chair looking at the work Mageia http;//www.mageia.org who are ex
employees of Mandriva have done, to bring you Version 6. and many many others, hard at work trying to help you....and the world.