I am not sure how Ardour would feel about being referred to as a commercial project. But I do suspect if you went back in time and sent an e-mail to misc@ ten years ago calling OpenBSD a commercial project because they sold CDs you would be told to take a hike. I will just agree to disagree on this one. You seem to want to make a bigger point about software and commerce and all I see are shades of grey in that commercialisation is not clear cut and neither is what is a project, its outcomes, etc.
I think GP makes a reasonable point about what commercial actually means. If you are selling something, that's commerce. If the Ardour dev or OpenBSD devs don't like it, then they are free to adopt a euphemism that makes them feel better about it, but that appeal to authority doesn't change the meaning of the term. I think that actually further reinforces GP's point about how the term "commercial software" has become a dirty word.
Now that said, I do support avoiding language that is offensive to people even if it doesn't seem to me like it should be (so long as it's still clear what is being communicated. I don't like Orwellian expressions).
