Let me give you a simple example, which is not really simple.
I own a small company, assembling widgets into units, which I then sell.  In a bad year, I do not invest capital into the business, nor increase my biggest variable cost (wages).  My income is X. 
In a good year, I buy equipment and increase my largest variable cost (wages) to lower the triple-net income.  Result:
I pay the same or less taxes, but the employees pay increased taxes because of the thier increase in income.  My paycheck income is the same, but my capital is increased.