They are asking people to imagine what their life would be if they have more money. Of course they say they would be satisfied (up to a point).
However, what people say they want are not necessarily what they need or feel. Contentedness doesn't come from having everything you need, it's a feeling that can be generated from within and rested upon, whatever the situation you are in.
What generates a lot of confusion and suffering comes from the difference between the imagined happiness ("If only ...") and the ability to be content in the present moment. (And sure! "Present moment" can be anything from sitting quietly outside and listening to skydiving). As long as you have an imagined happiness, that "if only X, Y, and Z happens", then you will never be satisfied.
It's totally crazy. People can just be happy right now, and go on with their lives, instead of twisting themselves up inside.