These are all the same old arguments that are easily answered. I suggested above that you listen to Friedman addressing exactly these concerns. All of these problems are handled perfectly by the free market; the only reasons they aren't under the current system is because our market is not free.
Of course everyone is going to try to cut corners and to get as much out of every economical exchange as possible. That is what makes the system so incredibly effective: everyone tries their best to get on top, and as a result everyone works to their full capacity. Enterpreneurs employ innovative business model allowing their business stay competitive on the product market, workers work as hard as possible to remain competitive on the job market, and customers buy the most cost-effective goods they can find. Everybody wins.
There is nothing predatory about this; it is how free humans naturally act. There is something predatory about taking away people's hard-earned resources, however, in the name of the alleged "greater good". There is no "greater good" to be had from coercion and violence.
Nobody forces the car maker to make safe cars. However, if one maker makes safe cars and another doesn't, then the latter will have to sell their cars for much lower prices than the former to stay competitive. People get a choice: either they buy unsafe, but cheap cars, or they buy safe, but expensive cars.
You want to force this choice on the buyers, so they can only buy safe cars, because you believe that you know better than them. But you really don't; you have no business in how they live their lives, and they have no business in how you live yours.
All these arguments come down to, one way or the other, justifying authoritarian society. "Take away people's freedoms to save them from themselves". Does it work? Sometimes maybe it does, but the sacrifice is too great, not to mention that we don't have a choice in the matter.
Nobody says that the free market doesn't have flaws. The essence of the argument, however, is that those flaws are human flaws, not systematic flaws. While any alternative will feature both human flaws and systematic flaws. Free market is not really a system; it is a lack of system, hence the latter are not present in it.
Free market strongly limits the degree to which human flaws can manifest economically, as the demands of the competition favor smart and effective solutions, not emotional and short-sighted ones. But when this competition is not present - this is when human flaws truly get a free ride.