The bourbon industry is pretty small. Don't get the image there are dozens of little firms making the stuff for anyone to bottle.
But when United or National made product that now has been sitting it was made by people who cared and many who've lost their job or gone to another distiller.
So the process was controlled. The key then is to pick the barrels that will give you excellent bourbon. Jeff's reserve (not yours, of course) gets excellent reviews
I hope that helps.