But maybe they are doing that because they are trying to avoid issues with regulation made by government and for compliance reason. This situation will happen if government is so strict regulating those big platforms.
They must proactively take preventive actions even policy and product changes possibly affect their business revenue but it is still better than having severe legal issues, even some kind of money fines from governments and regulators. Take preventive actions proactively to defend themselves first, stay observing for coming regulatory changes and enforcement are all good careful actions.
Before anything in regulations become clearer, it's good to stay with this strategy, it's never too late to relaunch their suspended products or resume previous policies.
With those existing issues happening, we better cross out the idea of doing such type of transaction especially if we know the exchange is heavily regulated and following the rules set by the government. So as what has been suggested always deal with our personal wallets on casinos since to make sure we are safe from those troubles.
With users, we must be responsible with our money, wallets and privacy that are all important for us and by going non custodial together with better practice, we will achieve better fund storage as well as privacy.