Ultimately we may be moving toward a taxpayer bailout of Boeing. Instead of doing that why not take that money any fund grants to help rediversify the market?
I don't see how you could have a competitive market like cars when the safety standards are an order of magnitude higher than driving and yet probably an order of magnitude smaller in size.
It's also worth considering that car crashes are disproportionately caused by drunk and teenage drivers. If you are between 25 and 70, drive in the daytime and don't drink yourself you can beat the safety record of airlines! There's no need to argue for laxer airworthiness standards using bad statistics.
Cars can travel extremely short ranges and extremely long ranges which skews their "journey" statistics as most people use them for short trips. Planes are only efficient at long ranges so "journey" statistics look bad but if everyone were to drive everywhere instead of fly, human fatalities would definitely go up.
You can slice the numbers in many ways, but in truth you can only substitute similar distances between modes of transit. Aka you can’t substitute a 1km car trip for a 10,000 km aircraft trip. Making deaths per passenger distance the only meaningful metric.
I can't see how you came to this conclusion, I'd expect walking to be the safest by far on this per-journey accounting.
Cars are the deadliest thing we have in modern society.