Lol i still want to know what happened to Windows 9....
The story I got from a Microsoft person (at Microsoft - see where I'm from) is that one of Windows 9x (95/98) beta'd as Windows 9, so to avoid internal confusion, they went to 10.
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If I own 3 cars should I have to get 3 licenses to drive them.
That's right. You don't take the license plate off of one car and put it on one of the others, or when the police stop you, it will be an interesting conversation.
With that, there are all kinds of licensing situations that are at play, and Microsoft is notorious for making the licensing for companies make you need a MS Partner (I used to be one - almost got to Gold Status, but oh, well...) to figure it all out.
One good thing is Microsoft is pretty good with small businesses in getting them "green" if they're pirating, like running the MS Action Pack on their business computers and they don't actively sell MS Software as their primary business.
Anyway, self justification may get you to sleep at night, but you're not dealing with cars and such. You are having a transaction between two entities, and neither is the State, so you can work it out between the both of you, however, if you call Microsoft and tell them what you're doing, and don't take their remedy, well, good luck to you!