It sounds quite amusing that casinos would implement such restrictions, as they could potentially diminish the casino's profits.
I also saw it as a ridiculous act from the gambling platform to engage on this act, making money in gambling comes through many forms and what the casinos target is to have a large number of gambler using their platform and betting with huge amounts, in this lies their own means of earning profits for operating a casino, i don't also think they can make a restriction by placing a limit to the rate of the amount they can use in gambling, this is business we are talking about and the sole purpose for establishing a casino as well as to make profit while gambling without limiting the gambler's interest is something both the casino and gambler would like to see, it's because a gambler can afford a particular amount in using it for gambling, the more they can't afford the money the less they play bet.