“The infrastructure has gone to a whole other level,” said CJ MacDonald, founder of Step, a debit card provider aimed at teenagers. Introduced in September, Step quickly reached one million customers, partly from endorsements from social media influencers like Charli D’Amelio.In December, Step raised $50 million in funding. The company was not looking for more money, Mr. MacDonald said. But investors started calling as soon as the app joined the top-downloaded finance app list shortly after it was released. The money came together in a matter of weeks, he said.Investors are even clamoring to buy into broken deals. …
