The last time I checked, the FSF still requires submitters to sign a copyright assignment. Their rationale is that it is difficult in the U.S. to file suit for

The last time I checked, the FSF still requires submitters to sign a copyright assignment. Their rationale is that it is difficult in the U.S. to file suit for copyright infringement when copyright of a work is not held by one single entity. Still, there's a world of difference between handing over copyright to a non-profit organization that is chartered to further Free Software, versus handing it over to a for-profit corporation and hoping for the best.