The pre-funding problem marketplaces run into
A marketplace paying out sellers in multiple countries through traditional correspondent banking typically has to pre-fund a nostro account in each settlement currency, holding working capital in every market it pays into before a single payout goes out. That capital sits idle most of the time and still has to be topped up manually as balances run down.
The more countries and currencies a marketplace pays into, the more nostro accounts it has to fund, reconcile and monitor, and the harder it becomes to know, at any given moment, how much capital is actually available to pay sellers in each market.
How stablecoin payouts remove it
Stablecoin payouts settle from a single treasury balance, in a single stablecoin, directly to a seller's wallet or, after an off-ramp conversion, to their local bank account, without a separate pre-funded account per destination currency. The marketplace holds one working balance instead of dozens of local ones.
This does not eliminate currency risk; it moves it to a single conversion point at the moment of off-ramp, rather than spreading it across many pre-funded local balances sitting exposed to exchange rate movement over time.
What still needs managing
Removing nostro pre-funding does not remove the need for treasury management: a marketplace still has to manage the timing and size of stablecoin-to-fiat conversions, monitor the liquidity of the specific stablecoin and off-ramp partner it relies on, and keep enough of a working balance to cover payout volume between funding cycles.
For a marketplace processing payouts across many markets, the trade is a smaller number of larger operational risks to manage well, in exchange for removing dozens of small, capital-intensive ones.