What you explained is the definition of dynamic. Thats exactly how I would explain it. If someone adds a big investment to the bankroll the max bet goes up. If a lot leaves, it goes down. It adjusts as the bankroll does.....
I had to explain the same exact thing to someone in DM chat asking why the max bet keeps changing if it is dynamic,,, and I had to keep telling them that dynamic is the opposite of static. Which, in any case, does not happen in most crypto casinos because their max bet and max wins are usually based on the total available bankroll whether or not they accept public participation to bankroll.
Now I know that not everyone will up and leave all together but you can't really just risk that could you? I could do that in any other currency because there isn't much going on with them, but eth will have staking, so people may take their money out to go out and stake with it. I still think its too risky.
I do not understand what you mean by risk. What exactly is the risk you are talking about here?