One big area is insurability, or how people can position themselves for less expensive and better life, longterm care, disability, and health insurance policies.
Better health can also mean higher productivity (which can translate into higher earnings) and lower life, health, disability, and long-term care insurance premiums over your lifetime.
The investigator had been trailing Kidd for four days, filming her going about her normal activities so that the insurance company could assess her claim for long-term disability.