The article you posted actually explains why "executive" pay increases faster than worker pay..... Nice job Ras....
Why the CEO Pay Ratio is Skewed
Whereas an employee may increase his or her own productivity by 10%, thus netting 10% more output for the firm, a CEOs decision-making affects everyone.
This can be made analogous to the examples in my post about Wall Street brain drain. A young, Ivy League-educated physics master might earn $200,000 working for a technology firm to make one product, as he or she produces only $250,000 in productivity at the tech firm.
However, the same person working for a Wall Street bank may design a new insurance product for the entirety of the technology industry, thus allowing his or her work to scale. On Wall Street, the physicist is paid significantly more, because he or she produces more output. Million-dollar salaries and bonuses are a normal occurrence.
Naturally, the CEO produces more in output than an individual worker. One awesome worker who increases productivity by 10% for his or herself generates maybe $10,000 per year in additional productivity. One CEO who produces 10% more output for the entirety of the firm, however, may produce tens of millions (even billions) of dollars in additional profits.