Comment by Fade_Dance

Because while banks hold duration, the net value of their current assets, future asset streams, and equity is above zero. Indeed the core focus of the business and regulatory side is ensuring this is so.

The central regulator caveat is also a huge caveat to brush aside. During the last round of systemic stress, the banking system essentially got a guarantee that all uninsured deposits would be protected, and banks were allowed to post their collateral for liquidity at terms that no other business has access to.

What OP is referencing is the oft-seen practice in the crypto space where failed entities fill an asset hole with propped up tokens, essentially transforming their paper loss on the balance sheet into liquidity risk that doesn't show as readily.

The important point here is that in the latter case, the entity may be fully insolvent, even after accounting for future cashflows on loans. When it comes to banks, even the left tail cases like SVB, their "problem assets" are things like long term treasuries, which are way down the risk curve when compared to the ponzi-tokenonics style "stablecoins" that we've seen unwind over the past few years.