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the equivalency is both go bankrupt if people win as much as the house wants you to think they win
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Prediction markets' business model is taking transaction fees from contracts between independent counterparties. Kalshi won't go bankrupt no matter how much you make there (though 'people' collectively will make negative [fees + taxes]).
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[dead]
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I’m not sure what you mean.

A pyramid scheme uses new investor money to pay fake returns to those who have already invested.

A casino provides games to bet on where expected value for the player is negative. A sportsbook balances their book by modifying the odds to remain as neutral as possible and capture the spread (see ‘vig’).

There’s not a whole lot of similarity there.

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Probably referring to online gambling specifically. And I would frame it as the folks who promote pyramid schemes are the same as those who promote online gambling.
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scammin the rubes
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not really
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