Comment: How so?

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In reply to comment: It will lose 100% of its value. (see in situ)

How so?

I am all ears. If it is a pyramid scam, I want to understand how it is so. I am sure the government will call it such.
If I understand pyramid schemes at all, someone at the top is reaping the benefits at the cost of those below. If so, how does that apply to bitcoin? If not, what do I not understand about pyramid scams?