question for flippers

Places like charity shops get their money because they are affordable. If you guys keep flipping once cheap items, making them expensive, no one is gonna be able to buy them anymore. Vinted and ebay arent directly made for this purpose, to be a good option for poorer people, however its well known that a lot of them use it. The more people flip, the less afforadble clothes for those struggling. I have no judgements and are not trying to start any arguments but I was just wondering, are you guys aware of this? Do you care?