Precisely. Where does the liability chain stop, once extended beyond the person who performed or neglected to perform as they should have?
Does the distiller or brewer get sued? The distributor? The farmer who grew the grain? The person who sold the seed, the tractor, the fertilizer?
The extended blame game is a creation of tort lawyers in search of a deeper pocket and a higher fee. (Just like the tobacco lawsuits, where the selfsame governments which refused to cut their income stream by banning tobacco, profited from suing the companies they taxed who manufactured and marketed a legal product they forced no one to use.)
The tobacco lawsuit especially disgusted me. A huge share of the money went to lawyers just like John Edwards, and the rest goes to government spending - an indirect regressive tax on the most vulnerable advertised as a victory for the people, but politicians don't have to take the blame for raising taxes.