So you think U.S. would be better at airplane manufacturing had Boeing gone bankrupt at some point in the past?

It's a pretty strong claim and I would like to see some theoretical justification, other than belief in the magical free market.

In my country, IIRC, we let Aero Vodochody to crash and be bought by Boeing. We are not better at making airplanes, honestly probably the worst than at any other point in history.