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> To improve this, the broker can throw out the best performing clients, since they might genuinely know what they’re doing.

In a parallel space this is happening in the UK with bookmakers. Winning punters either have their accounts heavily restricted, i.e. only able to place small value bets, or their accounts closed entirely.

Certain states in Australia had to introduce legislation to guarantee a bet size the bookmakers must stand. From memory it was $500 on country race meetings and $1000 on metropolitan meetings.

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