Even though SSD's are still expensive (but well worth it in my opinion), we could see the $$/gb come close enough for them to cross into mainstream much much quicker. Most people honestly don't need 2-3 Tb's of space. It's nice to have, but more often then not it's not used up. And if you need more, you can always buy an external to store your media.

So if the price of a standard 2TB harddrive hits say $300-400, then it would make more sense to throw in a 256Gb SSD drive. Or even a 128Gb drive. It's small, but most people don't honestly use it. Plus it makes the computer feel many many times faster...