They don't understand scarcity because they've never seen it before. I think it is hard for them to conceptualise it, specifically because it is digital scarcity. Digital value is hard for people to wrap their heads around.
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It’s just salt. It’s like saying everyone can’t afford gold bc everyone can’t have a room filled with gold bars
That same friend could sell all his securities to buy a whole coin. He won't do it, because it's "too risky". Then, he complain next year that only the top 0.1% can afford a full coin. Sorry dude, only the guys with testosterone took the "risk", while you decided to play it "safe".
Digit's value is also hard for people to wrap their heads around