Why...because it increased the risk of injury to defensive players.
If the technology of the game was build for 300 foot fields instead of baseball fields “the powers that be” could dial in the exit batted ball speed (with bat or ball control) to fit the smaller fields... this means exit ball speed would dramatically be reduced.
It should not take a rocket scientist to understand setting a bat and ball standard for competitive softball games on baseball fields instead of 300 foot softball fields requires a large jump in batted ball exit speeds.
If you want to address pitcher safety... make a game where the best hitters in the country hit the ball 370 feet max instead of 500.
Softball was much more popular when the “big boys” hit the ball at max 370...
The associations could dial the ball up for the lower divisions top hitters could so they could still hit a few homeruns...
Oh wait... I forgot... That WAS THE STANDARD WHEN THE GAME WAS AT ITS PEAK.... NEVER MIND😁😁😁😁😁