Hold back on that upgrade

So I see that Becta have lodged an official complaint about how Microsoft sell their products to schools. I've always wondered just how they manage to get away with the prices they charge in schools, and why we don't all just move over to macs / firefox / open office and the other free options.
But then I thought about it, and those little buggers at Microshaft are clever; they somehow make you think that you NEED their software because it's what is used in the home and in businesses. If only everyone moved over to open source choices, then it would really upset Mr. Gates and his profit margins.