I managed and maintained a known open-source project. GPL license.
4 guys in SKorea submitted patches back as required, which their company claimed was corporate espionage -- because they intended to violate the license?
Someone from the FSF took their case, but was unsuccessful. 4 guys went to prison because of them adhering to my license. Prison!
I've done BSD ever since. I can't prevent companies from being right sociopaths, but I can keep well-meaning and honest people out of prison.