Actually, we are going to migrate our Oracle environment to Linux(which in the past it was on originally). We also use linux for other things like Cacti, Nagios, Snort, Splunk, etc;
Also, take the time to read what I wrote. I didn't say we, or anybody else "designs environments" to run on Linux(whatever TF that means...). What I said is that the "the software in question, along with pretty much everything else we use is designed to run on either Windows or Linux." This means that, as I said, much of our software can run on either of those platforms. I'm a huge proponent of Linux and have been using it since the late 90s.
I actually worked for several years doing support for software that ran on SCO OpenServer and SuSE so you can take your "MS shill" tag and shove it up your ass.