The LLVM relicense shows that it is actually possible for a large project with distributed ownership to switch licenses given there is enough motivation to do s

The LLVM relicense shows that it is actually possible for a large project with distributed ownership to switch licenses given there is enough motivation to do so. From what I understand as a non-lawyer, situations with this old code where the copyright owners can't be tracked down is undesirable for a number of reasons and they may need to rectify that eventually anyway. (I believe it can be seen as a liability)