They are also a sort of crown jewel for South Korea, and probably far above the "too big to fail" threshold there. If worse came to worst, they'd be bailed out by the government.

They're not going anywhere as a corporation.

I'd expect a certain amount of bloodletting in their leadership, depending on exactly how bad the recall and consequent damage to their mobile electronics business is. But it's not an existential threat to the entire organization.