Why do property companies buy community liability insurance?

For example, vehicles charged for vehicle storage fees scratch in the community, street lamps are damaged or the ground is slippery, rain and snow weather, residents fall due to construction and maintenance (except for force majeure factors), elevator accidents, car accidents, etc., which can transfer the risks in the daily management of property to insurance companies, avoid contradictions and economic disputes between owners caused by emergencies in the normal management of property companies, and contribute to the normal management of property companies. It also saves a lot of compensation costs for property companies.