First, IT departments didn't buy IBM PCs, renegade departments did to escape the clutches of IT. I worked with two different groups one that had PCs and one Macs and Lisas (remember those!). Neither was supported by IT and neither was purchased by IT and they were both so we did not have to be in thrall to the Vaxen.
Next, even if all the IT pros in the world decide the Surface is the right thing it won't make it a success. Consumers will have to embrace it and start buying the Surface instead of the iPad for Microsoft's tablet to truly be a success.
Keep Up with TechRepublic