The source is not open, so not open source. It's as simple as that to me. That doesn't mean you can't allow the modification of your weights, but a model is no

The source is not open, so not open source. It's as simple as that to me. That doesn't mean you can't allow the modification of your weights, but a model is not open source because it lets you modify its weights. If we take the JDK for Java. It is open source, but the actually built JDKs of it are not all free to use or modify. It's quite annoying to build those, patch in source from newer ones into the builds of older ones, cherry pick and all that. So it enables an economy of vendors that do just that, and people willing to pay for the simple act of building the JDK from its open source. I'm not even sure it makes sense to license weights, they're not part of any creative process, I don't think weights should even be copyrightable. Weights are part of the product you sell, maybe a EULA applies, terms of use. It's like with video games, you're not always allowed to modify the binary (cheating), and if you do, you break the EULA and are revoked the right to play the game.