I would make a couple of points about that.
First, the government still maintains the power to override the financing board in terms of setting premiums, so there are several levels of protection.
Currently premiums can go up by a limit of 15ยข to pay for benefits in the event of a downturn. Then there is a $2 billion cushion, the reserve, of course. And then ultimately it's backstopped by the consolidated revenue fund.
It's conceivable that if a government determines that raising premiums would be too damaging to the economy in a downturn, they could override that and say, no, we'll just pay for that out of the consolidated revenue fund because the impact would be too damaging.