Maybe, but I don't think so. In general we plan to have every contributor sign a CLA as we want to make sure we can keep control over the development of the pro

Maybe, but I don't think so. In general we plan to have every contributor sign a CLA as we want to make sure we can keep control over the development of the project, in case we will have to change its license later. Some companies don't want to contribute back to open-source software and that's fine, if they pay a license fee instead we can use that money to pay ourselves and build new features for the open-source version, so everyone benefits. I'd even say that maybe open-source software is licensed too liberally these days. Right now for-profit companies make boatloads of money on the back of open-source software, without giving back much. I think if more projects were to use contagious licenses like the (A)GPL it might actually benefit the whole open-source ecosystem. Imagine what we could build if just 1-5 % of the largest companies would pay a small license fees for the open-source libraries they use.