This comes up often and is easily misunderstood: > AFAIK that means they have to release the code running on their server(s) This is incorrect. If they want

This comes up often and is easily misunderstood: > AFAIK that means they have to release the code running on their server(s) This is incorrect. If they want to comply with the license, then that is what they have to do. They don't have to comply with the license. You never have to comply with a license. However, by not complying with the license, you are infringing on copyright. If they sue you then you may get an injunction to stop using the software, and/or you may have to pay money. It's certainly not a good situation to be in, but it's copyright infringement -- no more and no less.