Yes, that's right, in fact they basically want a very big win, they want to win so much that they can do something big. But is it really very very possible and easy to get such a win? It takes a lot of luck to achieve this kind of win, which is very rare to get. So the main thing is to be satisfied, no matter how big or small your win is, if you can enjoy it with satisfaction, then that will be enough for you, so the main thing here is how you maintain your mentality, and where and how you can be satisfied.
Another important thing is having a clear goal before you even start thinking about gambling in the first place. What many people seem to lack is satisfaction, they become dissatisfied not because they actually did not win, but because each time they win something good their expectations keep rising. It's better to make a small win that you can stick to your target than to go for a larger goal that you will end up losing everything that was already won.
Many players tend to overlook knowing when to stop. Sometimes it's better to walk away when you are in a good spot than to wait for that big win. Discipline can be better at maintaining your profits than expecting luck to generate them.