Ehhh this is all great and everything, but unless there is a drive that is currently half what they are saying, then three years is unrealistic even in a prototype stage. I believe in the phrase "Don't count your chickens before they're hatched." Remember in 2001 we were promised 10Ghz single core CPU's and that didn't happen. It is still possible but not with the standards we are accustomed to, we would have massive power hungry processors with huge heat issues if that were the case.
Given HDD manufactures records we will see a slow pace of doubling once we hit 4TB. 3TB drives are expected at the end of this year with 4TB by the end of next. That is already a year down. The highest I see in 3 years if that actually happens on time would be between 12-20TB's give or take. Of course they have plenty of technology designs to pursue unlike microprocessors, but the pace has definitely slowed since we hit 1TB. Once High Definition becomes more mainstream that will be the ultimate app that pushes forth consumer DEMAND for bigger hard drives and more space. My question is, how are SSD's going to fare. Right now they are taking this lag in the physical sector to build up their capacities, perfect their designs, improve their memory chips, and lower prices to build up a solid consumer base. I definitely see Hard Drive Wars back again in the next 3 years as the CPU Wars are sure to pick up next year.
I ask one thing, can we have more than 4GB dimms pl0x? I would greatly love to take advantage of the 192GB limit of Windows (even if yeah yeah we don't need it). Its been forever since memory has competed with anything other than faster clock speeds (usually just overclocked by manufactures). Now that people are starting to move to 64 bit OS'es this may actually happen. Oh things should get interesting in 3 years.