Your question was what reckless things has the industry done, right? My answer is that I don't know, but if/when a fact pattern emerges that would trigger liability under state product liability laws (or maybe even dram shop type laws?) I don't see why we need to foreclose that option.
I see your point about particular industries being targeting for liability, and i don't know enough about federal laws on pharmaceutical or medical device liability to compare the two. I would argue that there are policy reasons to protect those industries that don't apply to the firearms industry, but I understand that some people would reasonably disagree with that. And the PLCAA's carveouts do seem well-drafted, but they inevitably capture more than they should. Here's one example from
this site that I think is a bad outcome and maybe answers your initial question too:
#### that. If a kid would still be alive today had a gun manufacturer included reasonable safety measures but they failed to do so, that manufacturer should face liability, just as a fireworks manufacturer would. At a minimum a jury should hear arguments as to whether it was reasonable to expect the manufacturer to install such measures. A law that prevents that is not a good law.