Apple — one of the most closed companies in the world — is actually using lot of open source and software. Licensing information in the Apple iPhone proves this. Go to the legal section on the iPhone and it cites Linux Kernel developer Ted Ts’o for his code. Linux Suse is there, too.
Zemlin made the point that Apple has hundreds of billions of dollars in cash, which is enough to buy HP, Intel and Dell combined. Instead, Apple purchased the copyright to the Common Unix Printing System (CUPS), which now is on every Linux and Apple system.
The list of companies using Linux does not stop at Apple. Microsoft, which once equated open source with communism, is now a top contributor to the Linux Kernel project. And VMware is getting on the bandwagon.