Australia and the UK both have a similar business environment to the Swiss model (but without the superior bandwidth) due to the way that their government-owned telephone monopolies were privatised: Telecom Australia (now called Telstra) and British Telecom (now called BT) were required to allow their newly-formed competitors to sell services over their networks (for appropriate maintenance fees, of course).
The US and German models are consequences of just yelling 'Free market!' without stopping to think about what's actually being sold in that market, and how to encourage genuine competition.
The US and German models are consequences of just yelling 'Free market!' without stopping to think about what's actually being sold in that market, and how to encourage genuine competition.