The discussion is going on as to whether the GST should be increased or widened to close the deficit gap.
This is a regressive tax that hits the lower income people the hardest and it would be politically dangerous to implement further changes, unless compensated for by tax cuts and pension increases.
While the average consumer can't avoid GST, businesses get a refund for the GST they pay. On the principle that it's easier to avoid company tax than GST, why not remove the refund to businesses for GST paid, and compensate by lowering the company tax rate ?
If it's good enough for the consumer, why not for business ?