With 1), if the company is clearly turning a profit from a dual licensing scheme, the contributors can ask for payment structure in their CLAs. This isn't an un

With 1), if the company is clearly turning a profit from a dual licensing scheme, the contributors can ask for payment structure in their CLAs. This isn't an unreasonable request if the contributions are valuable. With 2), you may just not be able to accept the contributions upstream. This is fine though, people can still fork the project, which is better than them not being able to do anything at all if it was proprietary.