> Anyone in the world with an internet connection can view, interact with, and download the British Museum’s 3D scan of the Rosetta Stone, for example.
I’m much less interested in half measures, whereby the public might be granted access
to scans only for, say, educational purposes, but be improperly prohibited from using
them commercially.
Those kinds of compromises undermine the public’s right to reuse public domain works
and can lead to people hesitating to use them in any way because they are unsure of
their rights and fear unknown punishments.
Whereas the licence on that Rosetta Stone scan by the British Museum is indeed "non commercial" only:
License: CC Attribution-NonCommercial-ShareAlikeCC
Attempting that just now from the linked page: https://sketchfab.com/3d-models/the-rosetta-stone-1e03509704...
Note that Sketchfab is a 3rd party crowd (not the British Museum), and trying to download that model requires signing up for a Sketchfab account.
So while it's kind of "public access", that's only while Sketchfab is still around and still requires giving this random place your details.
It's better than nothing, but not exactly fantastic for a public institution to be doing.