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.

We do not know what is their reason closing their site. If they become too busy and they think that they can not handle their site and have a new business in their real life or online life, it is normal if they close the site. But yes, the risk for their investors will be something that they will think because without the investors, they are nothing.
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.

If the investment is received honestly, then it makes no difference how much the coin grows. 1 bitcoin is always one bitcoin. But if the owners of the project are not honest, then this really starts to matter - greed will not allow them to return the coins that have risen in price.
And as I see, project owners have different strategies for "squeezing" investments - firstly, how to check the whale was lucky or the casino owner himself "won" from the investors?
Secondly, read how
snipie lost a significant share of his profits (this can be seen on about 19 page).
We do not know how to check who will be lucky, but the casino really makes money from the gamblers. We already see that the crypto gambling site's investment has a risk that every gambler must know, so we do not have to depend on the investment because we have other ways to earn money. I am sure that it is a tough decision that the Stake's team because they already in the crypto gambling business for a long time ago.