He took GPLv3 code, which is a copyleft license that requires you share your source code and license your project under the same terms as the code you used. You also can’t distribute your project as a binary-only or proprietary software. When pressed, they only released the code for their front end, remaining in violation of GPLv3.
You don’t follow the license that it was distributed under.
Commonly, if you use open source code in your project and that code is under a license that requires your project to be open source if you do that, but then you keep yours closed source.
Pardon my ignorance but how do you steal code if it’s open source?
He took GPLv3 code, which is a copyleft license that requires you share your source code and license your project under the same terms as the code you used. You also can’t distribute your project as a binary-only or proprietary software. When pressed, they only released the code for their front end, remaining in violation of GPLv3.
You don’t follow the license that it was distributed under.
Commonly, if you use open source code in your project and that code is under a license that requires your project to be open source if you do that, but then you keep yours closed source.
I still wouldn’t call it stealing, but I guess “broke open source code licenses” doesn’t have the same impact, but I’d prefer accuracy.
It’s piracy, distributing copyrighted works against the terms of its license. I agree stealing is not really the right word.