"South Korea's government worked closely with providers, encouraging investment and coming up with a development strategy that was collective but still included a deep reliance on competition." Source: http://news.cnet.com/South-Korea-leads-the-way/2009-1034_3-5...
"A number of governments, including South Korea [...] have experimented with or embraced infrastructure-sharing as a way to get new companies to compete in the broadband market." Source: http://www.cnn.com/2010/TECH/03/31/broadband.south.korea/
By contrast, here in the US, regulators like the FCC are toothless, and the Courts favor Big Business. We just saw Verizon crush the FCC's net neutrality policy in federal court. And we probably won't see the DOJ stop this Comcast/Time-Warner merger either.
There is a Whitehouse petition to "Stop the Comcast/TimeWarner Cable merger and require more competition in the cable industry." https://petitions.whitehouse.gov/petition/stop-comcasttimewa...
I will sign it, but I don't expect it to do any good--the Democratic party is beholden to Comcast as much as the Republicans are to Verizon. See http://shopyourpolitics.com/category/telecommunications