Without naming names I know of at least one company who were using it for their main svn repo. I am hoping they have come out of this relatively unscathed. I am not with them anymore and last I heard they were switching to git so perhaps they have managed to dodge this bullet.

Not really, archive.org shows Oracle, Macy's, and some other random corps using it for private hosting as of a few months ago.

Couple projects I've contracted on were using codespaces for their private SVN repos. I used git-svn, so that's a mercy...