I'm at a point where I'm hesitant to do any business with tech startups because I've been burned so many times by the "fake it til you make it" approach of saying their product did things it doesn't do. In one particular vendor's case, I found out about the fakery when the product I shipped on top of their platform keeps getting hacked.
I've probably swung the pendulum the other way too far, but I've gotten very direct and frank with what we have today, what we can deliver tomorrow, and whether it's something we won't add to our product.