> Can you please elaborate here? I don't understand what you mean. It is already the case that you can not relicense software under and incompatible license. A

> Can you please elaborate here? I don't understand what you mean. It is already the case that you can not relicense software under and incompatible license. According to some groups (Canonical, Nvidia, VMware etc.) you can use proprietary/incompatible licenses with (not in) the Linux kernel by using a shim. This shim construction or other compatibility layers relies on the argument that you don't have to relicense at all, but that just using/implementing the API is fine. The Oracle case has the possibility of changing this logic completely, making all shims/compatibility layers illegal and possibly making all software GPL.