2. Many areas have attempted to increase the amount of recycled waste lubricating oil by requiring service stations to serve as collection centers or by instituting deposit–refund systems. On what grounds, if any, is government intervention called for? In terms of the effects on the waste lubrication oil market, what differences should be noticed among those states that do nothing, those that require all service stations to serve as collection centers, and those that implement deposit–refund systems? Why?