I wonder if it has more to do with moving slow to let the market adjust.
Nah, I think that it's more a matter of GM kicking the can down the road. Let's face it, when it comes to the automotive sector, the US corporations are not exactly innovative or good at adopting new technologies. Hell, they
still use OHV engines with horrible reliability. The last non-American OHV engine that was sold in North America was
fourty-one years ago. The 1980 Toyota Corolla SR5 had a 1.8L OHV L4 engine which was replaced in 1981 by a 1.6L SOHC L4 engine.
The Americans are literally
decades behind the Japanese, the Koreans, the Swedes and the Germans when it comes to how technologically advanced their automobiles and trucks are. Every time an American automotive company adopted something new, it was an unmitigated disaster. Let's remember GM's first DOHC engine, the 2.3L "Quad-Four" (which was increased to 2.4L). My friend Shawn had one in his 1996 Cavalier Z24 and we nicknamed it "Rattle and Hum" after the U2 album because that's what it did. It also leaked oil like mad.
This talent of messing up new tech has leaked into the military-industrial complex too. I've been a military aviation enthusiast since 1990 and I have
never seen a fighter jet (and the whole program surrounding it) with as many defects and lies as the "F"-35. It has really become troubling but it shows the attitude that big US corporations have all adopted. As long as we get the money, who gives a damn?