And I would add that present flash technology is lousy and will soon be eclipsed by other solid state technology such as memristor. Flash has the big problem of limited write cycles and data evaporation.
For storage of large amounts of data present SSD disk emulation inherently limits the rate at which a large amount of data can be read from a single SSD via the current interface. We need a new interface that has a lot of parallel channels. Rotating disks couldn’t make use of this but solid state memory could.
That's true, and mitigating the write endurance problem is the source of a lot of the complexity in SSD controllers. However, they've succeeded in raising the limit quite high, such that you will likely junk the computer long before it hits the write limit. E.g., according to this endurance testing link, the Intel 335 series is rated at 20 GB of writes per day for three years, and the Kingston HyperX 3K is supposed to withstand 192 TB of writes (that works out to 180 GB per day for three years). Most users will be doing a lot more reading than writing.