Can you please drop a link to the research survey of yours so we can have a look into it too to confirm. The bot of you might not be wrong with your interpretations on the matter because every gambler has a different way of thinking with their funds. Take me for example, I make sure I withdraw a good portion of my funds after making a win from my bet, that's because I love it when I purchase something with the profit I make with my bet as it gives me a good feeling. We can't all be alike, you might worry about withdrawal fees another gambler wouldn't care
There is no doubt about the fact that, withdrawal after each winnings is what make the most difference as player whi is after fun since you can only experience fun when you win over losing and the satisfaction come from the point you make the withdrawal of your deposited funds.
We may have individuals differences, but the ultimate goal for a gambler is to establish a peaceful gambling session and this have alot to do with financial states, the main reasons why we need financial decipline while chasing the fun.