See, that's where I'm slightly more pessimistic than you because we are talking about an industry that continued to produce killer Pintos when Ford calculated that the wrongful death lawsuits would in the end be cheaper than a redesign.
The business climate in general in our society is fairly short-sighted. Chase this quarter's profits and maximize them - don't worry about what's gonna happen 5 years from now because the only thing that matters is stock price and dividends.
I mean, the 2008 financial crisis happened because banks intentionally removed and ignored failsafes that were meant to keep them from investing in things that would bankrupt them.
And even our most respected institutions that don't chase profits do stupid things in the name of cost and expediency. Challenger blew up because of a design flaw that was known about from the earliest days of the shuttle program, but the prevailing attitude was "well since nothing bad has happened yet, nothing bad will ever happen." And then NASA did it again with Columbia, which was another design flaw that had been identified in the first shuttle launch.
I strongly suspect that if an automaker can save money by eliminating a redundancy, they will, because as a society we are really bad at risk management.