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Legal authorities in the United States and elsewhere have inspected them mainly when they have pushed into market to the fringes of their own business. As a Facebook's attempt to avoid other software from adding its own system or Google's use of its search engine to influence consumers' purchasing choice. 

Google is different from Facebook and eBay. 

The worth of Google's search engine depends only 
indirectly on how many people are using it. 
For Facebook and eBay
the network of the other users is of central importance
can guarantee customer's loyalty
even when they feel ignored. 

A simple motive for the firms' free pass may be that they charge very little or nothing for their services and indeed, one of economists' primary concerns about leading firms is that they will score consumers, or at least raise prices in a way that pushes some buyers out of the market. 

But economists also worry that a leading firm will straight barriers to keep other companies out of its main market. Like Facebook, eBay has a huge network of registered users, but it does charge for its services. 

"With no rivalry and barriers to entry

the free monopolist has no market power

or monopoly price-setting capability. 

If there were no barrier to entry

a monopolist earning optimistic financial profits 

would be history and this era would be done. "

As a firm grows superior in the long run, average total costs decrease, providing the larger firm a cost advantage over smaller firms . If extensive economies of scale exist, an industry could change into one another with only one huge producer.


[ sources : http://www.foreignpolicy.com/articles/2013/01/07/the_new_monopolies ]
[ pictures : http://tuvaro.com/ws/facebook+/images ]


Written by : Lim Wan Zhen