I think people don’t take the license of projects they use seriously. The license allows such relicensing.
Use a copyleft-licensed project with outside contributors if you want the project to stay free.
Use a copyleft-licensed project with outside contributors if you want the project to stay free.
Rather look at how many organizations are paying for contributions. If it's all resting on a single back there's increased danger.
Still, the only way to guarantee continued development is paying for it (or doing it yourself).