Dividends are taxed at time of payment whereas an increase in share price is non-taxable until the share(s) are sold.  
Increasing share price is, thus, privileged over dividends.  

Ending this privilege can be accomplished by (1) stop taxing dividends, (2) tax increase in share prices quarterly.  

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre