Large BAS bills do not necessarily mean success but rather it could mean high turnover or high wages bills.
Success would always be a help otherwise it would be difficult to come up with the cash to wash a million or more points out of BAS bills.
It costs about $8,300 in cash to get a million points on Amex Ultimate or $6,500 on Westpac Kris flyer Platinum Visa.
Yes in each case you would need a starting income of about $65,000 to get either card started and of course a BAS or some other tax bill.Today that $65,000 is just a bit more than the "average weekly wage".
Now maybe everyone in business will want to grow.