Hmm, maybe you're right, but most software licences that I can lay hands on from a quick Google search (other than the GPL) explicitly mention 'use' and termina

Hmm, maybe you're right, but most software licences that I can lay hands on from a quick Google search (other than the GPL) explicitly mention 'use' and termination. For example, the BSD licence: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: If what you were saying is true though, it would mean that the BSD licence is essentially unenforceable, since once I have a copy, it can't be taken away.