How can you appreciate Serena or Barry or Floyd dominating if you don't understand why and how they are dominating? Especially a boxer like Floyd who isn't a knockout artist? Trout is the most dominant athlete in American sports right now, but he doesn't do it through hitting 70 homeruns, lacks charisma, and controversy, so the casuals don't have an entry point. Much like Floyd, Trout is a master technician. Floyd drew casuals with controversy, but is a "boring" boxer (not for boxing purists, obviously). If Floyd was a vanilla personality, I assure you no one would care. Point here is that people don't really care about watching dominance if the form it comes in isn't easy to digest, either through dominating in a simple and exciting way (knockouts, homeruns, dunks and three pointers - Duncan's metrical dominance didn't draw in casuals. They gravitated toward Kobe in that era) or a controversial/exciting personality. So basically, they treat sports as a soap opera.