Also increasing house edge for big bet is completely laughable, even Las-Vegas would not think of doing such a thing. Why punish a high-roller for giving more action and volume? In Las-Vegas they would actually lower their edge to get those players.
Does any Vegas casino allow a player to win 1% of the casino's bankroll on a single hand?
Perhaps this is the key insight. Maybe max-profit shouldn't be the max-profit per roll, but rather the max-profit-per-X, where X could be:
1) a certain number of rolls per individual. i.e. max profit per 100 rolls per account
2) a certain time per individual. i.e. max profit per hour per account
3) a certain number of rolls site-wide. i.e. max profit per 10,000 rolls
4) a certain time site-wide. i.e. max profit per hour
The problem with 1 & 2 is that the person could switch accounts. The problem with 3 and 4 is that it would stop all betting once the maximum is reached.