Pretty standard for consultants in general. I worked for a contractor where we did proof of concept after proof of concept for Kubernetes deployments and the people working on the proposals were literally the only people at the company that understood Kubernetes. It was a pure bait and switch. We had nobody that could actually implement what we were selling.
Very rarely does sales get dinged if they make a big deal for something that doesn't exist yet, or even something which is completely impossible. They cash their bonus checks and move on to the next mark, tossing a big mess into the laps of the people that have to implement. In a lot of the bigger shops, people move around so often that they aren't anywhere near by the time the shoe finally drops.
