> If you invest $50.000 in a car you may have an incentive to not use a low quality battery pack for example.

And if you have a phone which is worth the investment, you'll likely pay more for the better replacement part. Maybe take it to the Apple store rather than the shady kiosk on the corner.

Likewise, there are a range of quality/price options for replacement auto parts. If I'm working on a car that cost me $1800 and is on its last legs, the aftermarket part for half the price of OEM is fine, even if it's only expected to last half as long.

People are perfectly capable of making those judgements calls and weighing the tradeoffs, as proven by the market for both phone parts and auto parts.

The battery itself /may/ be something of an exception. I'd imagine as they become more commoditized that concern will become less applicable.