[maximus1983]

It will be either one of these or a combination of these.

* Windows has been approved by management to be the only OS allowed on the computer network * The software for showing the static images / videos and whatever manages it will have been written on Windows or even DOS * The manufacturer of said machines whoever wrote their software was Windows Developer and it is cheaper just to ship a copy of Windows Embedded then to rewrite the software , QA and integrate it.

I have a piece of software that I get small support contracts for. I tell clients it is Windows only. There is nothing stopping me from deploying to Linux or even one of the BSDs (I think). I just can't be bothered to deal with differences in distros, going through a QA process etc when it won't really get me many more sales.