Yes. Steam used to have card declines if your address did not match exactly.

Card not present was and still is higher risk than in person shopping. Now that most US customers have chip cards in their wallets fraud has shifted from in person to CNP. Digital goods are high risk because a customer could theoretically download and enjoy the digital good or save a copy and then chargeback. There's no shipping tracking number to prove delivery. Or a fraudster could go on a spending spree from the comfort of their home in another country. Adult-only games are even higher risk because a customer might have to explain to a spouse what the Steam charges were for.

Of course copy protection and the prospect of a ban of their whole Steam account blunts the most obvious customer cheating of keeping a copy and charging back. Steam games cannot be resold. Digital goods that can be easily resold are magnets for fraud. Such as cloud GPUs or international long distance calls.