If the bowling ball companies did not give away a single ball, sold those balls, and then used the profits they got from those balls to reduce the prices of balls they sold to consumers, I'm guessing that cosumers would pay about $.10 (that's ten cents) less per ball...at the most.
Seems kinda stupid to be griping about a dime. All companies need to market their new products, and giving those products away to high profile people will always be a good marketing tool.