An increase in the cost of labor has a big negative impact on the amount of labor used in national restaurant chains True False D Question 46 As long as small local restaurants & large restaurant chains make zero economic profits they will coexist in the restaurant business. True False D Question 47 Answer questions 47, 48, 49 & 50 according to the Last Word entitled " Internet ...": Once a business firm has become established as an oligopoly the need to compete with other business firms is unnecessary: True FalseQuestion 48 The internet Is dominated by a few major business firms & therefore is considered an oligopoly. ants D Question 49 A key characteristic of each of the business firms in the tech business is that each holds a near - monopolyover its part of the Industry True D Question 50 Social networking is dominated by Facebook with more than one billion users