I was in Australia and I feel the way the ISP do things here are so much better and can be implemented in our home. This is their policy:

1. Everyone can enjoy the maximum speed available in the network
In Optus's case its ADSL2+ and 20Mbps can be enjoyed as long as you have compatible modem. If you have ADSL model, you can only enjoy up to 8Mbps. 50% of the users can enjoy between 8-20Mbps 75% of the time depending on network congestion. Thats so damn better than Streamyx even if we can only enjoy 2Mbps of it.

2. Charges
They don't charge by speed and data packages. Everyone can enjoy the maximum. You only pay for the amount of data used. Their plans are 7GB onwards until 30GB. Price is also reasonable too (lets not do rates conversion because its not fair this way, assume 1:1 conversion).