There is a big difference between a person who buys goods in large quantity and a person who buys in small numbers, for example a person can spend $50 in getting a carton of biscuits spends less than a person who buys the biscuits one daily. The consuming method of the poor is faster than that of the rich you will agree to this because the poor eats more than the rich.
In consumption, the poor eat more but for expenses for the food, the rich spend more. The poor can't afford fancy restaurants but the rich can afford that so they'll always visit them and many don't even cook at home anymore because they spend all their lifes being too busy to cook something for themselves to eat. For the buying of things in large quantities that the rich do is because they have the funds to afford those things but the poor don't usually do that. Being rich helps the rich alot because they can invest and forget about their investing while the poor will still have to come back to their investment because they have already exhausted the money they had before investing irrespective of them having emergency funds or not.
You are looking at this all wrong, and the opposite is actually true. It does not matter how much you are spending in absolute terms as dollar spent, but more in the percentage of your income or wealth. A very rich person that has massive cashflows can spend thousands on dinners because it represents less than their 1% monthly income. A poor person should not even be eating takeout because it is expensive and they are paying high percentages of money on food. We live in a very consumer society, and it is often the poor people's fault that they are poor. Why do you think that so many places have takeout now? People are cooking less, spending more, and blaming the rich for living a luxurious life while they are doing everything wrong themselves.
Poor people are big heart people because they don't try to save money and always try to spend all money which they have. They don't have long term plans and always try to eat more. But rich people have money for investment and they are doing investments again and again because they have excess money and always think about how to double this money. Rich people don't work because they have passive income and in result their health is damaged and they are encountered by many diseases and in comparison poor people are healthy people because they have best routine of life.Poor people always try to work and they are doing hard work but they are getting less money which is very bad for them.