Ogg is unfortunately not a mainstream codec. 10 years ago, SomewhatWellKnownMusicTrackerThatShallNotBeNamed supported Ogg Vorbis. They discontinued support due to lack of interest and seeding (this was before the French authorities raided them and caused the tracker to be shut). To me, when that tracker stopped supporting Ogg, that’s when it died. Even the music nerd pirates thought it wasn’t worth supporting.

As I understand it Vorbis is the codec and Ogg is a container.

Vorbis was popular with video game developers who didn’t want to pay for MP3 or MP4 licensing but outside of that nope.

Spotify’s probably the most (only?) prominent Vorbis user out there… but they probably hardly count since everything they distribute gets wrapped up in their proprietary DRM.

Yes. Opus "replaced" Vorbis, and has several advantages over older and common formats. Many popular streaming and voice-related apps and platforms use it as codec.

Bandcamp does this for all of their paid and free downloads. They also do FLAC.

Bandcamp doesn’t do it exclusively and I wonder if they’ll keep supporting it.

I don't see why they wouldn't, it's one of their selling points and they offer about a half dozen different codecs and containers.

Hope so.

Anyone who does will have Apple users complaining in no time.