You're right about the consolidation of the defense industry Alex.
I'm most familiar with the aerospace industry...
In the 50s and 60 there were dozens of defense contractors, healthy competition, and world leading products.
Now Boeing has acquired McDonnell and Douglas.
Lockeed joined Martin, and acquired Hughes aircraft, and Convair from General Dynamics.
Northrop joined Grumman.
LTV ( Vought ) was acquired by the Carlyle group and hasn't been heard from since.
Fairchild joined Republic and proceeded to go bankrupt.
We now have Boeing, LM and Northrop-Grumman providing the new trainers and the KC-46 with huge cost overruns, the F-35 with huge cost overruns, and the B-21 with huge cost overruns respectively.
You are right Phi, guarantee is too strongly worded.
But it does seem to turn out that way quite often.
Probably because greed is a great motivator.