BetKing.io has a profit/ev of 140% so it strongly suggests that there is no cheating going on of investors.
Good job it's also provably fair so you can prove the house hasn't cheated players too
These kinds of statements just show the immaturity of some of the casino owners. It doesn't stongly suggest anything. Any of those casinos you mentioned before could have been losing legitly. Any of those casinos could have gotten lucky and could have a positive return on ev, and could still be taking a 10% cut by playing against the investors money. Beking being 140% on profit does not suggest the fact that you could not be cheating the investors and neither would losing suggest that you are.