Yes it does. But how are you cheated? The purchases should only be business purchases, and the company is paying the entire bill.

Right, I wasn't really serious but it would be interesting to know what the details of the deal are. I'd prefer if we used something other than Amex since it's definitely not universally accepted. Based on the other comments it must be the level of service.

It probably goes to Amex. What they offer the employer is likely a higher level of service and risk mitigation.