Legalized, league-approved sport betting is new-ish (2018). And sports betting has grown 25x since then. Not sure if I agree with OPs take though. It might jus

Legalized, league-approved sport betting is new-ish (2018). And sports betting has grown 25x since then. Not sure if I agree with OPs take though. It might just be that baseball is a traditional, conservative game and they are hesitant to change it. maybe that's why they're just using robo umps for challenges, and not for every pitch, which would be easy to do and would further the all-about-betting theory.