I've got my DSLR and my MBP covered for $60/year—I got it mainly for the camera, in case I dropped it in a lake or something, but it was cheap to throw the laptop on it too and then that saved my ass when I spilled water in it.
What most people mix up is, that there are two different types of warranties. One that is given by the shop and the other one is given by the manufacturer.
The warranty given by the shop is required by law and is 2 years. It covers _only_ that the shop gave you a device without defects at the time you received it. After 6 month you as the customer has to prove, that a defect was there when you received the device, which is hard to prove.
The warranty by the manufacturer is a free given by the manufacturer. Apple give you a 1 year limited warranty. If something breaks during usage, than Apple will replace it within this 1 year.
That basically means, if something breaks between 1 year and 2 year, then you can't use the manufacturer warranty. You could try the by law required shop warranty. But then have luck in proving to the shop, that the defect was there when you bought it.
Also, insurance companies are not non-profits. They take a cut as well. The factory already makes a profit, but that's not going to increase simply because they have to lawfully offer two years of warranty. They'll have more costs but it probably wouldn't affect the profit margin as much as an insurance company would.
If they make a solid product a manufactures warranty shouldn't cost them anything.
http://www.which.co.uk/consumer-rights/regulation/sale-of-go...