They’re the ones who are putting the open-source base models out in the first place. If I write a program myself and release it as open source, I have every right to subsequently release a closed-source version. But I can’t rescind the license on the version I released previously (any open source license with a clause allowing that should be treated with immense suspicion) so anyone else can keep building on that version if they want.
Embrace, extend, extinguish.
They can take open-source products, extend them to become the dominant player, and then close them.
Yeah it’s a violation of the license. What are you gonna do about it?
They’re the ones who are putting the open-source base models out in the first place. If I write a program myself and release it as open source, I have every right to subsequently release a closed-source version. But I can’t rescind the license on the version I released previously (any open source license with a clause allowing that should be treated with immense suspicion) so anyone else can keep building on that version if they want.