Seems unlikely. Think about what it would imply to have 0 waitlist movement: the adcom would have had to perfectly predicted their yield assuming a fixed number of new entrants. Any overestimate and you're over-enrolled, any underestimate and you don't have a full class. It's hard for me to imagine that ANY school would make so many outright acceptance offers that they would have a non-negligible chance of no waitlist movement--because that would imply they are taking at least an equivalent (if not greater!) chance of being over-enrolled.