How does cage diving give economic benefit ?

Cage diving with sharks is increasingly becoming popular if we look after the conservation of Great White Sharks it may have a economic benefit for example .In waters that contain Great White Sharks , boaters and dive operations earn tens of thousands of dollars yearly by featuring popular shark dives were guest can see Great White Sharks from the safety of steel cages .But DOC is putting down guidelines on permitting of activity to protect the sharks through the wildlife Act of 1953.