Bailey can throw left handed due to an injury but why don’t most fielders learn to do this, as in football players learning their opposite side.
throwing on the opposite side is so hard.
kicking is actually a simpler motion than throwing. the mechanics of throwing are way more complicated.
in kicking, the leg basically just follows a straight arc coming through. much like under arm throwing, which is why most people can under arm throw pretty much as strong on either hand.
but with throwing the arm starts bent, straightens up, and then you're wrist has gotta snap (unlike the ankle in kicking which really just stays solid) forward to get more momentum.
a lot more movements in throwing than kicking.
and the ultimate proof of why throwing is harder on the wrong hand, is if it were as easy as kicking wrong footed, it would be seen as common place by now. but it isn't.
john buchanan actually spoke about getting fields to be able to throw both arms to save time of getting it onto the other arm. i think it was basically just put it into the too hard basket as it's something that really needs to be done from a pretty young age i think.
fielding hasn't really advanced that much over the last 15 years, but the advancemenets between the 60 and 70's and the 90's were massive. watch games from 40 years ago. players basically give the ball a royal escort to the boundary rather than get on the ground. outside of the slips fieldsman and a handful of outfielders it was a joke.