Apple won't fix a widespread problem even if it is just a firmware update for them, so don't count on a solution
Well, just as a counterpoint to this, I had a problem with my 3+ year old Macbook pro retina where the screen just died one day. It was well out of warranty (I never bought any extended cover). I bit of googling found this (https://www.apple.com/uk/support/macbookpro-videoissues/) which says that Apple was aware there was a problem with some of the display controllers in the model I have. I took it in to my local Apple store, and 24 hours later they had replaced the display controller and I had the laptop back working perfectly. That's a repair that would have cost Â£3-500 (I can't remember what it was, but it was in that range).
I've also previously had an iphone which just stopped doing wifi one day and they replaced that on the spot in the apple store. One icloud restore later and the phone was good as new. I think that one might have been less than a year old though, so perhaps less impressive in terms of customer service.