Sony will no longer allow retailers to sell digital codes for games, add-on cards and PSN$ cards will remain

[Sogreblute]

melbye said:

This is the digital future, where the only place you can buy games is on the platform-holder's own storefront. There is no incentive for Sony, MS or Nintendo to sell these digital voucher codes anymore when physical is gone, Sony is only pulling the trigger early

Even though Nintendo recently is allowing Humble Bundle to sell digital codes for 3DS and Switch games. And ever since the Switch release I've been seeing a ton of Digital Download games for 3DS and Switch at Best Buy and Target.