Well it makes sence, doesn't it?
If by some miracle ETH shoots back up to $1k, everyone will want to take it out ASAP, practically leaving Yolodice dry
Um no,,, Yolodice has its own houseroll obviously, otherwise how else does it offer and pay out in ETH when there was no investments available for ETH? If every single person pulls out, then the house obviously cannot offer the same max bet/win but at worst that leaves it just as it was before investments opened.
The difference is, when they have their own bankroll to offer gambling that has a max bet that is strict and not changing too much, when you allow investments your max bet suddenly shoots up higher. So, if you offer ETH investment and people gamble with higher max, that's fine, when they take out all of their ETH and leave Yolodice with their own bankroll and nothing else that will cause the max bet to drop significantly all of a sudden and that would cause a trouble, specially when eth is so much valuable and people want to earn a lot of it as soon as possible.
So, either you do not offer investment at all, or if you do somehow you need to keep it high as well. A casino can't just offer 100 eth max bet and 10 eth max bet back to back in a day, you have to have some stability.
I mean it's a dynamic backroll and dynamic max bet. I highly doubt every investor would just up and leave the bankroll all at once. And if that did happen, then the site obviously has to drop the max bet.