A casino should be relatively safe so long as they are established and making profit why would you want to go elsewhere, the company making money will surely continue and can justify the returns given to you. Exchanges are kinda similar but depends if you like to gamble or not. FBC recently setup a loyalty token and gives a return of between 45% and 10% currently if you choose to lock for some time, also they might enable gambling with that token if I remember right.
It might change now that ETH is POS. Most of the casino today that has staking option are from EOS and TRON, it's profitable somehow for those who can afford millions of the casino tokens. They could just sit back and enjoy like they own a casino cash cow. I'm not sure which is profitable whether joining bankroll or having a dividend distributing casino though but this is almost the same.