Just getting open source adopted in my company takes around 10 man hours, and that is for something like a compiler that is only for internal use. If we will ship/expose it to customers we do due dalliance that probably amounts to 40+ man-hours to verify we can accept the license terms for that use and that the project doesn't have some hidden license issue (someone copied in code with a different license, link to something with a different license...).

Getting close source is even more work though - now we need someone to negotiate license terms (that is make sure our proposed use is compatible with the license we buy). We also make sure there is no risk of using their code (what if the closed source binary library has some AGPL3 code in it). I'm not even sure how to go through that process.