Why Is This Risk Not Present in Fiat-Backed Stablecoins?

The risk of the collateral value dropping below the stablecoin value is not present in fiat-backed stablecoins because their collateral is fiat currency, typically US Dollars, held in a bank account. Since the stablecoin is pegged 1:1 to the fiat currency, and the collateral is the same fiat currency, the collateral's value cannot fluctuate against the stablecoin's value.

The primary risk is instead the trustworthiness and solvency of the centralized issuer and the quality of their reserves.

Are There Any Stablecoins Backed by Assets Other than Fiat Currency, like Gold or Other Commodities?
How Do Crypto-Backed Stablecoins Differ from Fiat-Backed Stablecoins in Terms of Reserve Management?
What Is a “Stablecoin,” and What Are the Three Main Types of Stablecoin Collateralization Mechanisms?
How Can a DAO Use Inverse Perpetual Swaps to Manage Risk on non-USD Denominated Assets?
How Does the Concept of a Currency Board Relate to Stablecoin Hard Pegs?
How Does the Concept of “Full Collateralization” Differ between Fiat-Backed and Crypto-Backed Stablecoins?
How Does the Choice between USD-pegged and Crypto-Pegged Collateral Affect Margin Requirements?
How Does Over-Collateralization in Crypto-Backed Stablecoins Differ from Fiat-Backed Reserves?

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