I’m paywalled but my initial confusion is what is gentrifying goods and services? Gentrification as to described neighborhoods describes a phenomenon where weal

I’m paywalled but my initial confusion is what is gentrifying goods and services? Gentrification as to described neighborhoods describes a phenomenon where wealthy people pool ins a geographic area, causing businesses to cater to them and thereby drive poorer people out not just due to property values and rent increased but also due to lack of lower income services like cash 4 check and laundromats. Does this mean there are less store brand grocery items or something?