For the US: you already have a copyright on everything you write. Adding CC-BY-NC grants others the right to republish it for non-commercial use, it does not remove any rights at all.
Yes, that is how that works, correct. CC-BY-NC specifically prevents commercial use and as far as I see that, that’s the point of those people that add that footer to their posts.
No, that’s not how it works. Commercial use is already prohibited by default. They are adding no new prohibitions. They are allowing use that is not allowed by default.
For the US: you already have a copyright on everything you write. Adding CC-BY-NC grants others the right to republish it for non-commercial use, it does not remove any rights at all.
Yes, that is how that works, correct. CC-BY-NC specifically prevents commercial use and as far as I see that, that’s the point of those people that add that footer to their posts.
No, that’s not how it works. Commercial use is already prohibited by default. They are adding no new prohibitions. They are allowing use that is not allowed by default.
Not everywhere is the US. It’s not that simple here.
Yes, that’s why I wrote specifically for the US. Where many prominent AI companies are.