It's b/c domestics are over-priced shit products. They just are.
Bought my last domestic in 1999. It was a 4x4 S10. Had it for about a year then traded that pos at a loss on my first Tacoma. Before the S10, I had a new Jeep Wrangler TJ. I got rid of it b/c Jeep said that burning 2.5 quarts of oil between oil changes on a brand-new engine was "within the parameters of acceptable operation."
We've owned 5 Toyotas, 7 Hondas and 2 Subarus. Only 1 of those cars had me at the dealership with a higher frequency than I was comfortable with and that was Subaru's brand-new model, the 2019 Ascent. US makers have miles and miles to go to get my money again, I don't care how cheap they make them. They broke me hard.
And don't even get me started on Gov't bailouts... grrr.