Hiding the probabilities on games like Slot Machine, and Triple Chance, is a very dirty and unethical practice.

In most countries, it's illegal to have real cash games of chance, gacha systems, without publicly informing people of their chances. This is a serious legal issue for Totem, as gambling is heavily regulated in France. Their tax agency probably isn't aware that this company is profitting from cash games of chance online, because no one's reported them yet to the ARJEL. Otherwise they would be heavily regulated and would be ***** to put up their real probabilities behind their games.

After this many years, why can't iStripper post the % probability to win each item in their cash games like an ethical company?

Hiding those probabilities is just going to cause legal problems going forward, and makes customers feel disgusted. Combined with Special event cards (it takes 1000 credits to get Medusa), iStripper's practices are sick.