otherwise we're just going to see everything good disappear behind trade secret
We will see that anyway. All the code I work on commercially is copyrighted and yet a trade secret. Existence of copyright (with the exception of copyleft, but that's subversion) didn't help software to be open sourced.
IMHO allowing models to be copyrighted is basically 18th century enclosures again.
I mean everything is copyrighted anyway. It's harder to give up copyright than to keep it, so the main point is despite copyright protections, most companies do not publish their code publicly at all. For code that has to be pushed to clients, most companies even take efforts to obfuscate it.
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We will see that anyway. All the code I work on commercially is copyrighted and yet a trade secret. Existence of copyright (with the exception of copyleft, but that's subversion) didn't help software to be open sourced.
IMHO allowing models to be copyrighted is basically 18th century enclosures again.
What do you mean by that? Do you continuously copyright the changes?
Yes, more or less. I am not really sure why we legally do that, I believe it's just another protection in case someone actually copies the code.
I mean everything is copyrighted anyway. It's harder to give up copyright than to keep it, so the main point is despite copyright protections, most companies do not publish their code publicly at all. For code that has to be pushed to clients, most companies even take efforts to obfuscate it.