Too big to fail sets us all up for failure.

Microsoft is the new Boeing.

Boeing isn't "too big to fail". That was used to describe the big banks at the middle of the Great Recession.

Boeing is "the only game in town". All other big-aircraft manufacturers are foreign.

Being the "only game in town" grants them special status as a US defense contractor given that many agencies are required to source their materiel domestically.

So, to me, the "too big to fail" set absolutely includes "only game in town." It's really just a special case of it.

sounds like a great reason to break them up

Leave Boeing alone. The way they're going, they'll break themselves up eventually.

As Boeings tend to do.