Yeah but...those machines are huge and weigh a lot. Pound for pound, Apple gear is worth much more.
Most of the parts are not locked to the device, with a few exceptions.
Once upon a time I looked at my iPod and wondered how much space it would take if I spent an entire year's pay on iPods.
I worked it out and it was kind of depressing to realize that a year of my work would only buy about 1/3 ft^3 of iPods which would weigh under 50 pounds (9000 cm^3 and 23 kg).