"Permissive" licenses provide highest freedom to "distributors". "Copyleft" licenses provide highest freedom to "end-users". "distributors" normally tend to b

"Permissive" licenses provide highest freedom to "distributors". "Copyleft" licenses provide highest freedom to "end-users". "distributors" normally tend to be corporations that want to benefit from "free" software, but OTOH deny the same freedom to their own users. In other words, software that uses free software internally, but it itself was a proprietary with stringent license terms.