Because no one in their right minds would take anything less than even odds, because they know that the past results aren't likely to continue in the same manner. Almora is leading the majors in BABIP against all pitchers, and against RHPs. He's not fast, and he doesn't have a batted ball profile that would lend himself to having a high BABIP, much less the highest in baseball. He's 138th in hard hit % against RHP, 65th in line drive %. Everything about that screams that so far this year, his groundballs (39th in groundball %) have managed to find holes. Unless you think Almora, contrary to almost every other hitter in history, has learned how to place his groundballs (and just learned that skill this year), this is a long way of saying he, with a high degree of certainty, will not continue to have the results he's had so far. We have really good hitters who hit RHPs (especially shitty RHPs) really well. They should be getting more PAs than Almora.