Ardour was not in Debian and I have it in OpenSuSE under a third party repo.
Debian would require an indefinitely transferable trademark grant (c.f. Debian iceweasel problem.) I don’t know what the SuSE criteria is (for OBS, just being open is enough); VCV might qualify upstream so long as it didn’t ship with anything remotely patentable (cf. crippled VLC dilemmas)