Who bears the cost of that improvement? Either the manufacturer, the retailer, or the customer. The problem is that the waste created by vapes is a negative ext

Who bears the cost of that improvement? Either the manufacturer, the retailer, or the customer. The problem is that the waste created by vapes is a negative externality so there's no incentive to improve their design. Until the government starts requiring safe disposal of these things, we won't see a change. Think about what people used to do with old car oil before new environment protection regulations.