We should also be careful of underregulation. Most of all, we should be careful of reflexive, reactionary, and/or partisan reasoning and decision-making. Part of that is this hypersenstive allergy to regulation that has people sneezing and coughing every time the idea is within a mile of them. That's arguably a reason for the Boeing situation.
Business leaders always clamor for less regulation because they have big egos (they cannot be constrained! also they must know more than the regulator), because sometimes there is a negative impact on their quarterly revenue, and because many have embraced an ideology. When things go to heck, then it would have been better to be regulated more - a situation Boeing is in now, and that financial markets seem to find themselves in every decade or so.
(Regulation also helps create a marketplace where you can focus on making better planes, not taking risks with people's lives to keep up with the other crazy competitors.)