You are asking the question out of context
Now ask the question in the context of you being a parasite specializing on feeding off Education IT (that was the niche Pi was supposed to be addressing as its main goal, right).
Before - you had to deal with Linux (horror), Kids being able to do write software which could have been used inside the school instead of the school paying you (double horror), the perspective of having to write off some of the investment into MS?E of your staff (quadruple horror), decrease in commissions from reselling Microsoft licenses (octuple horror).
AAAAAAAAAggrrhrhrhr... the Horror.
And, now, the cavalry comes led by the knight saviour on the white horse. And it carries the most wonderful news on its banner - it is not just Microsoft, it is stuffing the school with 2 licenses per student.