Why Do Bookmakers Restrict Winning Accounts?

Question

Why would a bookmaker like Bet365 restrict or ban a winning account?

Answer 1

Bookmakers like Bet365 may restrict or ban winning accounts to limit their exposure to players who are consistently making profitable bets. These players are often using strategies that exploit positive expected value opportunities, which can be detrimental to the bookmaker's bottom line. By limiting the bet size or banning these players, bookmakers attempt to protect their profits and reduce the variance that allows these strategies to be successful over the long term.