In 2001, the fastest computer in the world (ASCI White) clocked in at an astounding 7.6 TFlops/sec and cost $110M. This is versus the fastest main stream computer processors which was around 10 GFlops or 1000x slower.
In 2012, the fastest computer in the world (Titan) clocked in at a mind bogglingly fast 17 PetaFlops/sec and cost $97M. This is versus the fastest main stream computer processors which was 177 GFlops or ~96,000x slower.
(I am well aware I'm comparing a single processor vs. a multiprocessor machine, but that's the best I can do)
Roughly, this is 2315x growth in efficiency/power in 10 years FOR LESS COST.
That is absurd growth for an industry that is already 50 years old (just for fun, to build a 17 Petaflop computer in 1961, would have cost roughly $141 Quintillion (or $141,000,000 Trillion). This means if you allocated 100% of US GDP to the paying this off, would take about 9.4M years).
To compare another highly specialized industry - this would be equivalent to a 2001 F1 Racer which topped out at around 250 mph now traveling at 578,750 mph and costing less.
I cannot think of another industry where more will be available for less over time.