The increase in margins is huge for them. With a PC desktop, and with most laptops as well, you can simply upgrade the hard drive or ram yourself and save a ton

The increase in margins is huge for them. With a PC desktop, and with most laptops as well, you can simply upgrade the hard drive or ram yourself and save a ton of cash. But tablets have changed how easy it is to do this, and Apple is also soldering their laptop (at least, on the Air) hard drives and ram in place. So if you want an upgrade, you pay for it upfront, and you dig deeper into your pocket to do it.