Are you prepared to protect customers by refunding them if they are victims of fraud when using your payment system? Visa and MasterCard are prepared to do that. That's how they could convince consumers to use their cards without worrying.
Millions of card transactions are made every day. If consumers worried, they wouldn't have credit or debit cards and they wouldn't use credit or debit cards.
What a single hacker writes is on the other hand just what he wrote.