"SharePoint adoption inside a company requires a SharePoint “evangelist”. This evangelist plays of the role of ensuring SharePoint is part of all IT projects (in some fashion or another). I have seen that if there is no evangelist, then workers will rely on what they already know to work, such as emails, Excel, etc. I have seen this “evangelist” role performed either by a CIO who has the authority to impact/shape all IT projects or an IT manager who receives business requests and then chooses to use SharePoint to craft the solution.
Lastly, at the executive level, executives want fast and EASY ways to complete their work (I stress EASY here). I have seen IT solutions built off of SharePoint be rejected at the executive level (either because the Web sites were too complex to use or the info in SharePoint was too hard to find). Despite the fact that SharePoint is arguably today’s “chicken soup” to problems, unless used in the correct way, SharePoint technologies can hinder conducting business. This point is true for all apps in general, but is also true for SharePoint."