More poverty might mean that a lot money for few and it's good for luxury brands life is short off course they want taste touch and feel all the finest things in the world.
The problem with poor is that they do not have enough money to live even a decent life, like I am not talking about Lambos or anything most poor people can't afford to pay their rent and bills that's it. The real problem with middle class is that they can't take risks, you may have a home, either owned or pay the rent, you may pay your bills, you may even go out a day or two every week for drinks at the pub, you may get some takeout, you may get the latest Phillips coffee machine, those are all fine.
But no middle class can quit their job, start a new business and wait until they can make a profit, and even if we assume that they found 100k somewhere and did all that, if they fail then they are going to bankrupt and never recover. Rich can start any business they want and fail, that's their reason to be rich, because if 28 of them fails, 29th may make them even richer.
money is flowing from top to bottom, but you are right we can also make money by buying the stocked of those products which are being bought by these rich people.
This must be a modern thinking that I have developed from bitcoin ecosystem and Satoshi Nakamotto: when you hate inflation, create your own money. This way, I cannot afford buying a tesla car but I own tesla shares. Yes, I also agree with OP.