This last "leap" was a slow one... and it was mostly because of business, nothing else. The technology was there for a while, it just never got pushed for the public.

However, I wonder what the future of disks will be?
BluRay already hit a ceiling with ~20GBs.

Unless they use ARD (Archival Disks) which is pretty much BluRay disks with three-layers and double-sided and more storage. And they're crapping out at 300GBs. SONY thinks it might be able to get them to 1TB. These disks won't even be released until late 2015, or 2016. And won't be re-writable. And we're talking 50MB/s reading speed.

So let me see, in 2016 we would have:
- Improved Cloud storage/streaming
(thanks to faster processing, better compression, faster, more reliable and more widespread of 4G connectivity for phones/tablets)
- 1TB microSD cards, and 2TB SD/CF cards

Cloud Computing is going to look really attractive in 2 years time. And microSD's will surpass physical disks in all aspects, and would be more price competitive than today's comparison. Cards like SDXC will make a total joke out of physical disks. And with CF, it will be more hilarious.