I've been on the other side of this. We talked to this startup about their product and they claimed it had exactly the features we needed. We said fantastic and were ready and willing to hand over $10-20k to them for this, and they just kept stalling and making up excuses and demoing things that didn't actually do what we actually needed. Eventually they had to admit that they couldn't deliver the feature we needed. We were rather pissed off and cut all future dealings with them. They could have ended up with at least $50k from us over 2-3 years if they'd been honest and showed willingness to work with us, and instead they got zero.