Since 1984 this same story has been told over and over and it doesn't change anything. For years it has been known that it is less expensive for developers to support their programs if they are written for the Mac. It has been known that employees require less support than on Mac.
I have worked at numerous fortune 100 companies and every one (with only a few exceptions) wanted to switch to Mac but couldn't for various reasons such as they were running 20 year old code that no one understood any more and couldn't afford to port the whole thing to Mac. Or they were tied into a long term maintenance agreement with Microsoft, or what ever.