Last year, the company launched PayPal Everywhere, a cashback-driven initiative designed to boost engagement within its mobile app. Chriss said on the earnings call that it's "driving significant increases in debit card adoption and opening new categories of spend."
As with virtually all financial services products, the new offerings from Block, Affirm and PayPal are designed to produce growth but not at the expense of profit. Banks operate at low margins, in large part because there's so much competition for lower-priced loans and better cash-back options. There's also all the costs associated with underwriting and compliance.