Thats not the mentality of the mega wealthy, thats a childs mentality (it applies to the simplest/cheapest of things all the ssame, and you can recognise the same behaviour in adolescent animals as well) - however the rest of us are forced to grow up.

And it's also why some people are able to stop working (and stop investing too) once they have enough for a normal life with reasonable comfort ... which is often financial security & personal health (ie less or no stress) more than things like having 5 maids/a new boat/showing off money for the sake if it.

But what I just described I feel like should be the goal of humanity, a goal for us to collectively achieve for all humans. We have enough production power I'm sure, it's our cultural stagnation that betrays us.