Investing in a casinos bank-roll is not considered a high risk investment.
Definitely it is, so as trading.
The only factor that is considered high risk can be if you are trusting to some site with your money. But if you do your research and find a site with great reputation and are sure they won't do an exit scam, then its a pretty good investment.
There is no guarantee that they will not exit scam, maybe it will just minimize the risk because they are trusted
but as long as you trusted your money to them, you are not in control of it so anytime you can loss it.
Keep in mind that due to the house edge the odds will always be in your favor. There are times however when there could be a bad month and you might have to wait it out until you turn a profit.
It's a good investment for those who are willing to wait for long return, sure they win in the long run due to house edge
and every investors needs to understand that investing in casino is not a quick return scheme, if you want a quick return, you need to take a higher
risk which is to gamble.
However it much safer than trading some alts on Bitmex in my opinion.
Depends on the person who will manage the investment.