What's that got to do with "commercial Unix IP" as mentioned by B2K?
Zip, zilch, nada. You jumped in here without reading, just to take a cheap shot. How typical.
A whole lot. Companies like IBM are now investing in the Unix clone Linux that they must give away to China and other countries for free instead of building up their own proprietary Unix product. A billion dollars a year, minimum, by this one company alone is going into Linux. Are you claiming they are investing that much in their version of Unix? If you are, I'd like to see some proof.