Such a loss will definitely at least make the player think about moving to a new casino or maybe to a casino where he has already played before.
But I would like to note that much depends on the psychological profile of the player. Sometimes a person is just used to playing only in one casino, even when he begins to realize that in some casino he can even have better bonuses and even better service. But such a person, due to his habit, is simply too lazy to move to another casino. Such players are also sometimes encountered, but the majority of players, as you correctly note, are still guided by the quality of service, the absence of problems with both the withdrawal of winnings and protracted, long or frequent losing streaks, which sometimes begin to raise suspicions about the honesty of the casino.
Habit plays a big role in our life, and if it coincides with good conditions in the casino, as you said good service and hassle-free withdrawal, then this will almost always play a decisive role for the player. You can get used to any casino, often their menus are quite similar and you can intuitively quickly figure out what and where is, but finding a hassle-free casino that would meet all the requirements is a more important component, which is not present everywhere.