Everybody knows how fast hard drive costs are dropping, don't they? But really, let's look at the figures.
Here's a chart from That Data Dude.
Impressive. But look closer. The "Avg. Cost per GB" scale is logarithmic!
And look at the knee between 1989 and 1994. The cost per gigabyte dropped 98%. As I recall that was in the throes of IBM 3390s. The 3390 was announced November 14, 1989 at 946MB. The last entry in the family was the 3390 Model 9 announced May 20, 1993 at 8.51GB. Bigger by a factor of 9.
Looking down at current costs they are pennies per GB. Several organizations with deep pockets have started offering "free" storage.
Think of the opportunities this will offer. Think of the problems this will cause.