I was reading about the early history of Unix and how Bill Gates became a multibillionaire after buying rights to QDOS for $50,000 and marketing it as MS-DOS.  I would think just that shrewd maneuvering which eventually led to Microsoft dominating the PC market well into the 21st century would have earned him a biographical movie, “The Operating System” maybe?  Further, I found it even more interesting how the various owners of Unix throughout the years managed to botch every single attempt at turning it into a viable commercial product while non commercial versions initiated by hackers and the open source culture have become viable products.  Consequently, I am slowly moving towards the “free software because it works better” camp.