Sometimes, the laugh’s on us. Last year, at the start of Emmy campaign season, most pundits believed it would be a race to the finish between Amazon Prime Video’s “The Marvelous Mrs. Maisel,” which had won in 2018, and the final season of HBO’s “Veep,” a three-time winner itching to take back its crown. But then came the “Fleabag” phenomenon, winning comedy series, lead comedy actress and more accolades.