It does not imply anything about reversibility. It applies just as well to a liquid asset like bitcoin or stock as to an illiquid asset such as a house.
Two people each have 1 BTC. One paid $5 for it, the other paid $10 for it. Their present situations are identical, therefore the rational behavior is the same for both of them, despite their different purchase prices.
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'Sunk cost' implies an irreversible transaction. Bitcoins are highly liquid. Nothing fallacious about this logic.
It does not imply anything about reversibility. It applies just as well to a liquid asset like bitcoin or stock as to an illiquid asset such as a house.
Two people each have 1 BTC. One paid $5 for it, the other paid $10 for it. Their present situations are identical, therefore the rational behavior is the same for both of them, despite their different purchase prices.