It's not unique to Amazon. My company did a deal with a F50 retailer that you've shopped at. About a month ahead of the first deliverable which was agreed to i

It's not unique to Amazon. My company did a deal with a F50 retailer that you've shopped at. About a month ahead of the first deliverable which was agreed to in the statement of work, one of their VPs called me and screamed at me demanding a live demo or they would cancel any further payments on the contract. Oh and stay on the original delivery timeframe. We were small enough that we couldn't afford to fight that in court and losing that client would have been the loss of our biggest deal and a huge negative signal. So we made it work but it just proved to me that contracts without the ability to enforce them don't mean anything.