The effort was motivated in part by a more challenging economic backdrop and consumers feeling pinched by inflation.Retail executives, including Walmart CEO Doug McMillon, have spoken about even wealthier consumers feeling pinched by inflation.About 75% of the retailer's market share gains in grocery have come from households that make more than $100,000 in the past two quarters."We've got some customers who are more budget-conscious that have been under inflation pressure now for months," he told CNBC's "Squawk Box."Many of those services are geared toward families that have lower incomes, do not have relationships with a traditional bank or do not have the credit history to qualify for credit cards."