Not a good long term trend. Health care costs are falling for a similar reason - no innovation and as drugs come off or patent the costs drop creating the false appearance of improvement.
The disparity between corporate profits, earnings for the top 20% of income earners and the rest of the country is driven almost exclusively by government fiscal policy at the national, state and local level.
It's bad but not the way you mean it. Historically average yearly corp profit growth is about 7%, but for the past four years it's hit a brick wall even while employee compensation's jumped another ten percent.
Corp. profits are a good thing, we need them but they're lagging.
Corp. profits have increased more than pay, though it's been a bit more erratic...