Early fire departments were run by insurance companies to fight fires on their customers' properties. Those who couldn't afford insurance would be left to burn.
EDIT: Seems I found a clue ....
"In 1862 insurance companies told the government that they were unwilling to be responsible for London’s fire protection as the cost of compensation was becoming too high. The government decided that the Metropolitan Board of Works would take control."
As one's liver combats the effects of pollution in your bloodstream by filtering it, so, as a society, we have developed certain organs to combat the degrading effects of similar sorts of problems.