Lol, getting banned is not normal. It means a player had breached one of the TOS the platform has. Casino won't banned and account without any reason. Plus the person is not banned but limited. It happens in sportsbet where bookmaker limits an account due to too much winnings.
True, my friend also finds it funny to those who have made mistakes and violated the rules so that their accounts are banned but still don't realize their mistakes and instead blame the casino.
Actually imposing ban sanctions on accounts that have violated fatal regulations is casino policy so that they do not repeat the mistakes that have been made.
Unfortunately, people like that only rely on emotions and don't think clearly, so that in their minds, only the casino is the most guilty.
Regarding restricted accounts, I often hear about incidents like this and on average, casinos do this because the account has too many wins or has been detected as suspicious of fraud.