For example: its monopoly status thanks to its share of the market (particularly its ability to advertise and affliate), uneven information thus (how can you make an informed decision on what client to use when MahjongTime is portrayed as the only choice?), the nature of the market (particularly in that because of the multiplayer aspect any client must quickly build a strong base to be viable, and thus a limited number of firms can be viable) the small target demographic in the shorter term, etc