Until liquidity runs out.
FWIW, I agree Tether is flaky and worth avoiding (to the point of having a short), I just cringe at attempts to cite market cap as a meaningful figure on its own.
[1] https://assets.ctfassets.net/vyse88cgwfbl/1np5dpcwuHrWJ4AgUg...
It’s misleading to look at the market cap with the implication that it’s fluctuations are due to loss of value per unit (the usual cause for non-stablecoins).
You might as well say that your bank lost $500 when you made a $500 withdrawal (while neglecting to mention the deletion of $500 in liabilities).
https://news.ycombinator.com/item?id=31392605
Prerequisite: you expect USDC to keep parity with the dollar.