Moore's law states that the number of transistors per square inch on integrated circuits would doubled every year for the foreseeable future.
In subsequent years (since 1965), the pace slowed down a bit, but data density has doubled approximately every 18 months. Most experts, including Moore expect this to hold for at least another two decades.
So we probably want to hold on to out hats if not wallets as the next speed upgrades are inevitable. Could this be the next salvo:
Lightpeak would be a new protocol for interconnecting devices that would allow blazingly fast data transfer. What do we get from it? Higher resolution, more tracks? Probably both and with it comes larger capacity on our storage devices.
We should probably be prepared to upgrade our hardware, interfaces, cup's and storage every few years or so. Painful, but true....I hope the landfills can take it!