Incumbent telecommunications carriers have been mandated to share their networks with new retail service providers at regulated wholesale rates. This regulatory structure creates options which incumbent systems must write and which all potential entrants are awarded at a price of zero. Intense...

Regulations governing broadband networks are being considered. Natural experiments conducted with respect to "open access" rules yield probative marketplace evidence. Using the metric of subscribership, policy regimes are compared. Prior to 1Q2003, cable modem service was unregulated (and has...