On the contrary, if there are high barriers to entry and low contestability, incumbents will always abuse their market power and incur some kinds of efficiency losses.

如果市场进入壁垒很高，市场可竞争程度很低，在位厂商可以免受竞争的压力，因而往往滥用市场势力，造成种种效率损失。

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The webgames market is fragmented with low barriers to entry yet fewer infrastructure restrictions than the MMOG market.

FORBES: Asia Leads The Way In Global Online Gaming Trends

Yet banking is supposed to be a fiercely competitive market, with low barriers to entry.

ECONOMIST: British banking

In search, Google is now vulnerable because the barriers to entry to its market are low.

ECONOMIST: The internet