Assertion: oligopoly's profit | /r/CapableOf | reduce excess profits
Facets:
value: to zero
type: OTHER
Source sentences:
text: A PC company can make excess profits in the short term but excess profits attract competitors, which can enter the market freely and decrease prices, eventually reducing excess profits to zero.  
text: A PC company can make excess profits in the short term but excess profits attract competitors, which can enter the market freely and decrease prices, eventually reducing excess profits to zero.