Refer to the photo in the article in AppleInsider on why Mac Minis are here to stay.
Each one of those small boxes is a cute Mac Mini PC from Apple. Really surprising to know what people could do with such a small mac.
Even more surprising, from this article, is that information that Las Vegas alone uses atleast 10,000 mac minis in its various hotels and casinos and mostly for video surveillance.
For instance, here in Las Vegas, I know there are at least 10,000 Mac minis running in the different hotels and casinos on the strip," said Brian Stucki, who owns and operates the Mac mini colocation service. "Many are used for video security points. Certain casino companies use Mac minis in each of the slot islands on a casino floor to manage the backend. I know of one nationwide salon franchise that uses two Mac minis for each one of their stores."