Carriers want to sell "unlimited" LD plans. Customers like unlimited LD plans. And for most of the US, LD is cheap enough that you can make that work. The mo

Carriers want to sell "unlimited" LD plans. Customers like unlimited LD plans. And for most of the US, LD is cheap enough that you can make that work. The model breaks down a bit if you have to start subsidizing your customers' calls to sex lines in quantity.