Executives want to have successful projects to show to their value to an organization. But usually the board members are unable to comprehend the details of a project. So the herd mentality kicks in. The CTO will seek approval for SAP and provide Gartner magic quadrant BS to give the board a level of comfort.
Now whether SAP is the right tool, or if it inconveniences users doesn't matter a whit to the CTO. All that matters is budget and timeline. The CTO wants to be able to speak to the board and say that the project timeline was met and under budget. All else is a complete non-factor.
