Comment by EmX_3000

We had IBM's at my University back in the day, got some time in on those for sure. AIX is its own thing, I'm a bit surprised they don't offer a hobbyist version to get a little more mindshare. Nobody chooses it from my experience, it just comes with your IBM, probably plus tip, and you probably use it if you have legacy programs and can't just run Linux. Makes it tougher to get qualified admins though, maybe that's the whole plan. You just hire 'em from IBM.