The Bill & Melinda Gates Foundation made it mandatory (20th July 2006) for researchers of HIV/Aids those on their grants to share their findings.

A proposed Open Source approach by a company that have always dealt with selling proprietary software and made billions of dollars.

Here you see the benefit of Open Source approach where one shares with another the knowledge of his/her findings and together putting up an effort to make this world (applies to softwares too) a better safer place.