Well.. it wasn't an IT decision..
IT wasn't involved into in a major decision. Only the CIO and his wife (more about her in a minute) and the board. Company wanted to combine all our systems for the whole company and several states to reduce costs. We were disjointed in that mergers and acquisitions had left us with about as many systems as there were companies acquired.
So.. CIO convinced the board that contractor X could handle the job. His wife was a major player in contractor X. Needless to say, $250,000,000 (US) later, the system was total disaster. They were hiring as the new system was slower. The troops were excited because they "wouldn't need a mouse".. but weren't told to keep it since the PC's were windows and mouse still needed for mundane, minor things like e-mail. The system ran for about a week and a mad scramble by IT (who suddenly got brought on board the week before going live) managed to undo things. Meantime, massive layoffs of those that had been hired in anticipation of the "slowness" issues. Oh.. and CIO suddenly made an exit.
A new CIO who actually worked in IT was tasked to straighten it out. Took about 2 years and lot less money to implement a system that actually worked since IT types were involved at every step. Many felt that the board should have been hung to dry or at least hung.