You guys seem to be forgetting COMAC, Mitsubishi, Irkut, Bombardier, and Embraer that are all probably capable of stepping up to fill any void left by Boeing’s commercial division going under.
military is another discussion, but on the commercial side someone will take over.
None of these are anywhere near able to either develop or even manufacture product that compares with the Airbus and Boeing commercial line up. These two companies have a solid duopoly in the large commercial transport jet business that is about impossible to break (unless you want to include the former Soviet bloc producers as viable alternatives). Companies like Douglas and Lockheed are long out of the business or merged.
Bombardier ran out of cash to fund the C Series and although it is based in Quebec, even the Francophone friendly Canadian Liberal government wasn't going to pump in any more subsidies. As
@SCCutler posted above, Bombardier contributed the C Series program into a JV with Airbus, and then could not meet its $700 million funding commitment to the JV. It spent more than $6 billion developing what seems a damn fine airplane (now called the Airbus A220) from all the reports. But this past February Bombardier announced it was selling its ~34% stake in the JV; 25% to Airbus for $591 million and 9% to the Quebec government for zero consideration.
It has also sold off its Canadair water bomber product, the de Havilland derived Q400 turboprop and its CRJ regional jet production. All it has left of any substance in aerospace is the executive/private jet products.
Demonstrates yet again there's few ways to destroy capital faster than aviation.
Boeing is a NGO basically, the US Government will make sure they don't go under. They are facing an uphill battle commercially, and they know it. Between the MAX, the slowdown on orders to zero and pi$$ing off the Chinese, they are going to have to rebrand. They are our biggest export machine, and that is going to stop for a long time.
The airline companies worldwide, many of which are government owned (and likely more will be defacto government owned by the time this COVID episode is over), do not want a single supplier of large commercial jets. They will work with the US government and Boeing to do whatever it takes to make sure there is not an Airbus monopoly outcome.
It would not surprise if any bailout might have a condition required Boeing to separate Commercial Airplanes into an independent company with separate management from the defense businesses.
I said the same thing about Pan Am!
Pan Am, Braniff and so many other failed airline companies were all "one of many", nationally and internationally.
Boeing is "one of one" nationally and "one of two" internationally. Different situation entirely.