I keep wondering how this can of worms is going to play out. Right now it doesn't get them into trouble because they're taking from OSS communities, but what happens once one company finds out code they released with a restrictive license got copied verbatim into a closed product? Will they retaliate? Will they decide together to not open pandora's box? I wonder really
It doesn't matter. The courts are entirely unfair. Take the copyright office's arguments: it states the court should explicitly address "Market Harm". Essentially, ANY fair use, such as AI training should be illegal, if it harms the market for the original authors EVEN WHERE THE LICENSE WOULD NORMALLY ALLOW THAT USE. That was reasoning applied to protect billionaire profits from the horror of library lending. The copyright office's position documents this extensively.
https://www.copyright.gov/ai/Copyright-and-Artificial-Intell...
See IV. Fair use, D. Factor Four
In other words, no matter the license, the fact that OpenAIs fair use of the works for training MIGHT take opportunities from the plaintiffs should, BY ITSELF, be an argument to make that AI training illegal. Even if the software programmers agreed to allow AI training, then still sued OpenAI, that is a valid argument accepted from billionaire companies.
In case you're wondering how the court argued that in this decision? It didn't. Not covered at all. Obviously brought up by the plaintiffs, not adressed. The weirdest pro-billionaire arguments are just accepted by the court (the big one is accepting AI models as making new works despite the copyright act clearly stating, 50+ times, only "natural persons" can make new works), and the most reasonable, long established principles, such as market harm (if the use of a copyrighted work harms its authors in the smallest way, even lost sales, even lost job opportunities, lost licensing opportunities, ...) is enough to forbid it's use EVEN WHERE THE LICENSE STATES DIFFERENTLY.
This was required because they wanted to forbid digital lending out of Disney's movies, where the lending software would guarantee that only one copy is actually in circulation (ie. use of DRM to let a library just show a movie without the patron coming to the library to get it). In other words: when billionaires want to make money of works, and the first sale doctrine as well as long standing fair use principles for libraries were in the way, the courts declared that market harm superseded fair use. And, of course, suddenly, when it protects programmers from billionaires, it doesn't apply anymore.
The courts deciding this way has done incredible damage to the availability of older works, to the point of destroying them entirely, since libraries cannot legally keep collections of older works and make those available over the internet, and it is impossible to keep the physical media in working condition and available over a large area, like the united states, for example.
Repeating theme here: absurd arguments to protect billionaire profits, silently rejecting and ignoring reasonable arguments to protect normal people.