You are quite right to pick up the degree of contempt for some of the previous posts in this thread where the implications are that IT support staff have the right to undermine strategic decisions. I fully agree with you in providing a system which can be managed and used by all. I would, however, be very surprised if you have not experienced those who do treat the school systems as their own personal fiefdom.
At the end of the day, we are paid to put vision, strategy and policy into workable practice (for all involved) and to move forward. Where decisions have been made to put laptops into the hands of children, it should be a clear strategic decision taken to move learning forward. I consider it my job to ensure that this CAN and DOES happen in a rational and manageable way. If children can not benefit from our work, we might as well not bother.