I think it will never happen because casinos don't care about their users' gambling addiction. They do include links to responsible gambling services which are usually at the bottom of the site but casinos are a business and the more people deposit the more they profit, they don't care where your money comes from.
But if any casino cares about the addiction of its users then that's great, maybe the casino can limit how much $ can be deposited in a day. Unfortunately, this is not possible and hoping for something like that is just a utopia. Responsibility and gambling addiction is our own responsibility as users, casinos will not help with anything