Quick Question: Subframe connectors- WHY didn't they do this from the factory?

back in the day, Gm cars had rep for better bodies than Ford or Mopar and i would have to agree. Mopar rep for better drive train than the rest and that was true i feel.
unibody? faster, cheaper way to build a car.
ever since i quit worrying about what someone slse thinks, i have started welding in tubing for subframe connector.cause the floors have rusted till metal is thinner, and it could have used the connector from day one anyway,, but like the man says, they never inteded these cars to last 40 years and never expected us guys to love the darn things!!???

by the w ay, ever looked at a 440 4 speed B body from the rear??? twiisted !!!!!