I'm going to guess that they got a lower or more competitive bid from another vendor which is why you lost the contract and it is less about you more about them

I'm going to guess that they got a lower or more competitive bid from another vendor which is why you lost the contract and it is less about you more about them. You know just like dating. If they actually wanted to work with you they would have given continuous feedback since responsiveness to their concerns is usually part of the deal.