alt Hacker News"Open Source" can also become "Source Available" overnight. See Redis, Terraform, etc. In the same vein, "Open Source" can also become "Closed Source" overnight.
In neither case does the change apply retroactively. It only applies to new contributions after the license change.
Well technically Redis had a fork before it became source available known as valkey which is still in bsd license
Terraform was forked to create opentofu if I remember correctly
I think the most recent example is kind of minio for this type of thing no?
Also I am interested what are some open source projects which became closed source since it seems that you haven't named any and I am curious how they can do that. There must be some legal laws protecting it.