I think you've got 'overpriced' and 'completely different from other manufacturers' mixed up.
the average Windows based laptop is assembled in several different factories by a hardware company, completely independant of The software company (Microsoft)
Apple, however; have the computers and laptops built in their Chinese factory, and have the OS (also designed entirely by Apple) installed in them ready to ship. With Windows laptops, the hardware company will blame the software and visa versa, Apple provide complete hardware and software support from their stores, in around 30 different languages. The average conversation with apple is over in 5 minutes, whereas with microsoft is 3 or 4 automated machines, two clueless support personnel and an angry toss of the phone across the room.
Your paying for the hardware, software, the customer service and the name, don't forget the name.