True, but statistically, the cases where a single thing going wrong causes an accident make up only a tiny fraction of car accidents.

I doubt that's true. I think most car accidents are caused when people aren't paying enough attention - a single person doesn't do what they're supposed to do. Airline travel has built in redundancies - the two pilots only have to focus their attention fully during takeoff and landing, at altitude they have a few thousand feet to get back in control of any situation but below 10,000 feet they have a sterile cockpit with no casual conversation. Hell, a plane can lose all of its engines due to a bird strike and still manage to fly, in one case landing intact in a river with no fatalities. Then there's maintenance, airplanes are so well looked after that we identified a very clever (yet worryingly extensive) scam of fraudulent parts, before any accident happend as a result of them.

Airlines are far, far more prepared than drivers are. Obviously airlines have worse situations to prepare for, but they prepare so well that the overall risk (likelihood x severity) is lower.

Still, I see no Boeing CEO charged with murder - or even manslaughter.

Half the Boeing CEO's came from McDonnell Douglas, and with them they brought their habit of ignoring issues at the design stage then denying them until at least two fatal accidents have occurred. If they got away with it then there's no reason they won't continue to - but that's more of a symptom of corporate Wall St than airline manufacturers specifically. Before the merger, Boeing had an excellent reputation as an engineering company and behaved as such.

capitalist corporations are by definition looking to maximize profits

You're describing a publicly traded company, not necessarily all capitalist corporations. If you privately own a business you can run it into the ground if you like, or just run a little mom & pop shop that keeps its prices low so you break even. CEO's of public companies are obligated by law to pursue profits.

We're talking about publicly traded businesses here so that point is somewhat moot, but nonetheless I don't think you've demonstrated that all airliners looking to cut corners criminally. They certainly want profits - who doesn't - but most manage to stay well within the bounds of the law and safety standards. When they don't, the level of detailed investigation we get and the attention we pay might make it seem less safe, but it actually proves just how much safer the industry is.