>>Or no Boeing planes at all?

That will never happen, the federal government would never allow it, and they have many avenues to ensure it

1. All Future bailouts of Airlines could be contingent on them buying Boeing Aircraft

2. Direct Bail out of Boeing to make them the most inexpensive plane to buy

3. Regulation to prevent advertisement of aircraft type

4. Increase import tariffs or other protectionism to make Airbus and other manufacturers more expensive

Boeing is a national defense contractor and it too important to our national interests to be allowed to fail, if the 4 things I listed above do not happen something else will will prevent Boeing from Going under, or even losing market share.