Why should they charge different rates?
The nonsense of it becomes clear if I release the equity in my own house to fund the rental property and then borrow for my own house.
It turns out, Apple is "missing out" on charging extra for phones that will be used to make business calls, and Telstra is "missing out" because they don't charge you extra for calling businesses.
Because of all this lack of profit, government is missing out on gst which would be charged on the higher prices.
Therefore, picking a low-priced deal basically means you're against the government and anti-Australia as a whole. Love it or leave it, but we can't allow terrorists to stay here.