The whale showed us that large bets are risky for the house. Why not to change house edge with a bet size? So that someone could bet even 1000 bitcoins at once, but with a house edge like 20-30%.
That the plan - the max profit limit a stopgap measure only. He will be raising the house edge gradually for bets over 50 BTC. Will remain 1% for those 50 BTC and below