Q&A: How much revenue does a bank generate from each credit card they signup over the lifetime of the card?

Question by Astro B: How much revenue does a bank generate from each credit card they signup over the lifetime of the card?
Banks appear (to me anyways) to be ravenous about signing up new credit card holders. I'm familiar with the statistic that states each American has an average credit card debt of $ 9000. But I am wondering how much average or median revenue it's worth to a bank to signup a new credit card account? Any verified info that someone can point to would be much

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