[KongchangAI]
Unverified50% confidenceOpinionExact time

In the AI subscription context, the monthly fee is a sunk cost that has already been paid and is non-refundable; no matter how much quota is used, this money will not change, and rational decisions should consider only marginal benefits.

1
Sources
50%
Confidence
Long-term
Relevance
10/18/2026
First Seen

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