Comment The game is actually completely finished (Score 2) 1
The problem was baseball doesn't break up into easily monetizable chunks like football and especially basketball. So it's hard to get the pacing right where you're getting a user is done before ordering every few minutes. I think older arcade baseball games could be profitable because they were much simpler, usually just boiling down the home run fests. But by the 90s people expected to play a full game.
It's also possible that those older games weren't profitable but operators didn't really notice as much. I won't say that I didn't see the ball games on the floor back in the daydidn't didn't go to arcades very often. Still it was usually football in the '80s and basketball in the 90s