1) A major objection in really most any sale is price, and this is no different. Mr. Christensen has just tried to sell me on a large, and expensive change. I would be more likely to be on board had he presented the costs versus savings in print so I can really see the trade-offs in front of me. If you're just putting out number after number I'm more likely to object or stall the sale because I can't SEE and evaluate the true sums and savings on paper.
2) My second objection would most likely come from clearing the back junk off the lot for the new installation to occur. If I'm a business person, I'm not going to be chomping at the bit to use my paid employees to spend their time clearing out the space for their sale rather than doing their normal jobs! This is time and money out of my pocket to accommodate a sale I didn't necessarily ask for.
3) Lastly, I can find myself having an objection to the change! Being in business you often find yourself stuck with what you know. I know I personally will run in my rut when I know it works and I already have it properly budgeted. I often have to be convinced it's truly worth my time to adjust funds and shift our everyday practices and usages to account for a change. So is this change REALLY worth that to me as a manager in convenience and productivity to make the switch.