I have been reading this allegation of company and casinos changing their terms of service without notifying customers.
Since I have been reading about this, I have never seen a very tangible evidence either by screenshot or by link where such Terms of services were changed without the knowledge of the customers. Almost everything in the discussion is based on assumption and accusation. I haven't seen a real life situation. I do not argue that it cannot happen or it is not happening. But at least I need to see an evidence that it has happened with a certain casino.
It’s very hard to to provide evidence on ToS changes since no one reads it seriously in full every time they play in the casino or even during on the registration when user click agree and read the ToS.
I believe this is why it's important to use only a reputable casino when gambling huge amount to make sure that you will not be cheated by the casino since shady casino usually use ToS to make their way against user that won huge funds against casino. Stake.com ToS update is the best example for notifying all users that they change ToS since they provide notifications during login for easy notified.