this makes it lose the commonly agreed upon properties of "Open Source/Free Software", and even if you could get all the major contributors to agree to a licens

this makes it lose the commonly agreed upon properties of "Open Source/Free Software", and even if you could get all the major contributors to agree to a license change, the insuing dramastorm would almost certainly lead to a fork. (this was very similar to the cause of the xfree86 -> xorg fork)