Until someone comes up with a REASON for HDD capacity to double at the same price point every 12 months, there is going to be diminishing returns in consumers' minds. I doubt mainstream (i.e., non-techies) can fathom what a 1 TB drive is right now, much less a 2 TB drive in a year, and a 4 TB drive in another year. If downloadable video were ubiquitous and had high market share, 2 TB drives would be necessary. But we're not there yet, and it looks to be a while. The 500 GB and under (especially for laptops) range looks to be the sweetspot, and while SSDs can't compete in that range YET, give 'em a couple of years. Will SSDs every be THE storage solution for desktops . . . that is a tough road, as the already mentioned size and price ARE issues for desktops. The one variable I could see affecting the desktop/server space (say in 5-7 years) is power consumption and heat generation.