designed better cars, if the outsourcer companies built better quality parts, and if the designers made cars that more people like, they'd still be in this situation because GM's management sucks.
Only recently has Consumer Reports claimed that US built cars have caught up to Asian built cars in overall quality; before that, GM (and Ford and Dodge) were a distant second.
I haven't even contemplated a GM car in 15 years since I've always hated their interiors.