Um, what did you miss? I did mention that we do use PCs.. but we prefer macs anyday. And, you say that you work on 3D oriented games.. the mac platform isn't exactly known for games! So you don't really have a choice, but to work with pcs.
About banks, hospitals, etc using PCs.. duh, they're cheap to use. There's something called a 'budget' and I don't think huge organisations like banks, or hospitals want to spend extra money on macs (although they do land up spending more money on tech guys anyway)
My 'little cocoon' consists of probably hundreds of studios - audio and film, all in 'Bollywood' across India, .. so while your firm may have a 1000 employees working on 3d oriented games.. uh.. we're looking at hundreds of thousands of professionals working on film and audio..24 hours a day, 365 days a week. And we don't need 'tech guys' because we don't deal with Windows.. so there's a lot of money saved right there. (Besides, all the tech guys in India work for Dell

)
Yes, kernel panics do occur on the mac.. but the system can reboot and everything's fine.
All my fellow musicians and film engineers/producers use a mac for work, communications,etc. and a pc for playing solitaire.