Yeah I saw it and I am not sure about his BTC amount, I think he missed a zero or two.
-snip
Unfortunately he doesn't seem to have missed one zero, he just confirmed a loss of 17k $ -snip
In general, all this makes me very suspicious of the honesty of these investment projects.
Investing in the crypto gambling site is too risky because we never know how high the coins will increase.
You seem to be right, it may be the reason why some big casinos like Stake are not offering these kind of investments... Maybe they think it's too risky for the investors and they don't want to be seen as bad actors. 