Very interesting!
The Bridgeman v. Corel looks to be a straight up case of taking pictures of public domain work and then trying to resell. It looks like the courts judged in favor of keeping it public domain, so that's great news.
In the case of Meshwerks v. Toyota, this is not so straight forward. From what I gather, Meshwerks was hired to 3d scan the body of a Toyota prototype car and then Meshwerks turned around and sued Toyota when Toyota used the 3d scan for something or other. The court ruled in favor of Toyota but the claim is that Meshwerks claim to copyright was invalid because the 3d scan was based on "... designs the automobile manufacturer produced, so they were not original works of art that could be copyrighted, and because there was no valid copyright, there could be no infringement."
So this is different from 3d scanning a piece of art, as the sculpture might fall under copyright, say. The Meshwerks v. Toyota was dismissed because, as I read it, engineering artifacts like the body of a Toyota are not considered art and therefor not copyrightable.
EDIT:
Looking at robin_reala's comment [1] linking to the UK's "sweat of the brow" doctrine [2], it looks like your take on copyfraud extends to museums in the UK as well. From the Wikipedia entry:
> In a copyright notice ... the UK Intellectual Property Office confirmed that digital reproductions of public domain images are not protected by copyright ...
[1] https://news.ycombinator.com/item?id=24553116
[2] https://en.wikipedia.org/wiki/Sweat_of_the_brow#United_Kingd...