Any given trade also has a capacity. A mispricing opportunity can only absorb so much investment before it's no longer mispriced.

A particular trade that can 2x $20k won't be able to do the same for $20 billion.

It's why RenTech capped their Medallion Fund and closed it to outside investment.

If there's only a billion dollars sloshing around on Kalshi, you can't expect to put $1 trillion into bets and take $2 trillion out.

Stock market’s got plenty to spare