Why are there not more lawsuits? Is the scope of the damage too difficult to quantify, or the negligent parties too diffuse/remote to sue?
As much as our litigation-based culture is vilified, it can help spur action by changing the cost/benefit of doing nothing and force companies/governments to step up and fix this before more people are hurt. The risk of Mesothelioma lawsuits, for example, help add some seriousness to asbestos exposure claims.