Speaking with a guy from a forestry service who studied fire impact mitigation strategies, apparently the cheapest, effective approach is for each home to have

Speaking with a guy from a forestry service who studied fire impact mitigation strategies, apparently the cheapest, effective approach is for each home to have an emergency water sprinkling system that covers the entire house and as much of the property as the owner wants to preserve. Sure there's a cost to this but is it really so much different that having sprinklers in high rise residential buildings?