Why is Broadband in the US So Expensive?

Report from Multiplayblog.com

Why does the US have the most expensive and yet the slowest broadband speeds compared to other countries around the World?  The US is paying $16 per mbps where in Korea they pay $2 per mbps, Japan $7 per mbps, Russia $7 per mbps, UK $10 per mbps?  

Broadband household penetration is approaching near 45% and hopefully, this will allow the market to mature and cause some competition.  However, this is unlikely because most industries start to consolidate when they mature and within the next 3 years the US penetration will be near 75%.  Can wireless broadband like 4G, LTE or Wimax help bring some of these costs down in the future and help provide some healthy market competition?