Hmm...'By design' to make you pay a whole lot more.
It doesn't 'make' you pay a whole lot more.
Your usage is your usage & as with any utility company, you are responsible for what you use.
Should you choose not to monitor your usage then you can't say you were 'made' to pay more.
Telstraclear (in my opinion) has done some damn fine work. They've given more options to more customers for UCLL/Cable services than other providers have & they're not stopping there either.
Service levels are at the stage now that if you don't like it you don't have to use it.
Make your own choice.