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

Barriers to entry in the market are low (a camera and quick wits).

ECONOMIST: The market for celebrity snaps is booming. Hide now