While I am no lawyer, I suspect it would come down to choice. You chose to incorporate a layout which required the use of a weight hole to comply. I dont think there could be a class action lawsuite based on choice.
Additionally, they governing body is allowing continued use through a period whereby todays bowling ball would likely reach its life expectancy anyway.
I would suspect there would be some compromise to the length of time these balls stay in service instead of forcing a private organization with rules we agree to participate with to pay a fee.
Even if winning, it would cause our yearly fees to increase to pay the lawsuite which ends up costing us anyway.
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