The poor always want to behave like the rich, both in their appearances and their composure and the rich want to behave like the poor that is why you will see a rich man today using outdated gadgets and behaving old fashion. This is simply the Irony of life.
I believe rich people spend more money on their development, education, connections, creating new projects that will help them become even richer. Of course, if they earned their money themselves. Ordinary things are no longer needed for them to confirm their status, which cannot be said about the poor.
But I bet if poor people had the opportunity to become rich, they would also spend more money on their development, education, connections...Because this is basic knowledge to maintain wealth and anyone knows it, it is not a secret and only rich people know. The poor know that too, but they face bigger challenges that need to be addressed first, and they have not yet had the opportunity to do so.
No rich person behaves like a poor person. Do you see any rich people riding bicycles, renting houses, eating street food...? Or do they live in a mansion with servants, private helicopters...? How can it be said that rich people behave like poor people and vice versa?