[grahamlee]

If you look at the Open Source Definition, you see the four freedoms: https://opensource.org/osd

That’s unsurprising because the OSD is based on the Debian social contract, and Debian is a GNU distribution.

[cassianoleal]

I'd invite you to read It's Time to Talk About Free Software Again [0] by one of the authors of both the DFSG and co-founder of the OSI.

[0] https://lists.debian.org/debian-devel/1999/02/msg01641.html