ToS are not very reliable as usually any business reserves the right to change them and essentially are wording them in a way to give themselves a maximum privilege over players. It's important to remember that ToCs do not supersede the law.
And there's absolutely nothing shady about arbitrage bets
And what law exactly if you willfully accept it during the registration process. I once a believer too of what you are believing but the recent event on the crypto world that show great example of this.
If you dont mind sharing a little bit OT on gambling. Celsius holders lose already there money on court battle.
The judge, Martin Glenn, found that Celsiuss terms of use the lengthy contracts that many websites publish but few consumers read meant the cryptocurrency assets became Celsiuss property.
If ToS is not legally accepted then how come a crypto company use it to win a court battle?