One group of people playing soccer, football, or baseball can take up almost the entire turf space in a small popular park. Think of Dolores Park is SF. On weekends it's packed with people picnicking. If instead 20 people were playing baseball, it would not be safe for anyone to picnic nearby because of the risk for errant baseballs.
On the other extreme end of things, one person hitting golf balls in a park can make the park unsafe for everyone else. At some point, the government institutes regulations to keep the park fun/safe/useful for the largest number of people.
On the other extreme end of things, one person hitting golf balls in a park can make the park unsafe for everyone else. At some point, the government institutes regulations to keep the park fun/safe/useful for the largest number of people.