So the Chinese have shot the guy in charge of their food quality. Do you feel better now? Given the Chinese government's penchant for shooting people it hardly gives me any comfort, anyway.
Fundamentally, if someone at the top is allowing lousy and dangerous food to be exported, no one in China cares until they get caught. China doesn't even have one consistent set of trade laws. How are they going to enforce "quality" even assuming they agree with us on what that means.
If you want a great example of the failures of deregulation of business, the import of bad foodstuffs into the American diet would be a good place to start. Profit motive fails as a substitute for good policy. Profit motives are short-term and short-sighted. U.S. business has an equal share in the blame for poisoning our food supply.
Imagine: all the dogs that died from bad food from China could have been children. Would we be embracing the free market then?