Even forgoing the other comments on the number of universes/galaxies/stars/planets in existence, how do you reach this hypothesis given that you have only one example of evolution to draw inferences from. The entire train of thought is derailed that the only reliable information we have on evolutionary systems is our own system and, using this information, we can only conclude that every planet on which we have found microbial life we have also found sapient life.
Divide the known history of the Earth into ten million year increments, and the fraction of them with life is quite high compared to the fraction with intelligence.
