Sure, among enthusiasts, and I would agree that apple's philosophy of hermetically sealed parts goes against this principle. But apple isn't competing with the

Sure, among enthusiasts, and I would agree that apple's philosophy of hermetically sealed parts goes against this principle. But apple isn't competing with the parts manufacturers targeting DIY-ers, they're targeting the direct-to-consumer market. And on that segment, it's striking to me how much longer the devices have a shelf life (again, anecdotally). Also self repair is much less common in that non-expert market, so their policy of keeping repairs in house as much as possible I'd argue doesn't have a huge effect. Edit: I think I should give the parent comment more credit. After thinking about it, maybe the real goal should be to make partial hardware upgrades (like the DIY pc's enjoy) more accessible to end consumers.