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're very right but some poor people got good plans and they are also very careful of their food consumption level since the know that it ain't easy for them to afford things they need they may decide to tighten up their belt a bit some that they can be able to save and do few things too, yea in the area of investment, rich people can actually keep investing or invest a large sum but wouldn't bother to continuously keep checking teuir investment but as for the poor people although I won't say all poor people, I will only have to use the word some poor people will definitely have to check back irrespective them having back up funds but there are poor people that'll resist the temptation of wanting to withdraw or should I say tper their investments because of their target, some poor people are very disciplined some of them even persevere more than they rich reason being that they aren't comfortable of their financial status as such they'll want to do everything within their capacity to push up.