or rather: their customers don't care and keep buying what they churn out anyway, so they have no incentive to change

I feel like the pretty massive consumer support of Apple CarPlay/Android Auto, to the point where supporting it is sometimes used as an explicit marketing element, is a sign to the contrary.

When they're all enshittified like this, what are you going to do? Be the one person without a car? That'll show 'em!

We'll find out soon enough, won't we. Or at least GM will.