It will be interesting to see how this technology develops. The first time that I received a briefing on it was back in the 70's. Still haven't seen any real products yet.
Another technology that was BIO based was projected to have 1 trillion bits per cubic centimeter. Haven't seen anything yet either.
Right now it seems flash memory is the in thing. But it still lags way behind HDs in terms of storage and cost. I can purchase an PATA or SATA 300GB HD for about $100. I can purchase about 8GB of SDHC memory for the same price. Comparing prices, today it would take close to 4 grand of flash memory to equal $100 in HD capacity.
Laptops and ultra portables will push for flash memory use creating a bigger market and drop in prices. On the side of the fence are servers and server farms. They need huge capacities at low costs.
Right now I see both technologies continuing to develop for the next 10-15 years. By then we may have something completely different to store our data. Then again, maybe not!