PenMount
My goal with open sourcing my software are to make the (software) world just a little better, i do that by writing the best software i can and hope that as many people possible use it, if i write the best ftp library in the world and you need a ftp library for your proprietary program i hope you use mine instead of an inferior implementation.
In my world view i do not loss anything by you making a proprietary forks of my work (i still have my version of my work with my license) but you and your users are getting a better product.
There are a lot more examples of this.
On the other hand look at how RMS/FSF talks about LLVM and BSD[2], i am a developer there prefers the MIT license for my software, and for me FSF and GPL are a lot more dangerous then apple and there open source license.
[0] http://www.mysql.com/about/legal/licensing/oem/#4 [1] http://doc.qt.io/qt-5/licensing.html [2] https://lwn.net/Articles/582242/
I think the best way to describe danish unions are that they are a mix of us unions (that i don't know that much about) and law firms for worker.