Major storefronts will not host games that contain stolen content. If a game is found to have used "ripped" or pirated assets, it is often blacklisted.
Because the only thing more expensive than buying an asset... is explaining to a judge why you stole it. unreal engine pirated assets
If you plan to sell your game, you have a valid license for every asset. Epic allows you to sell games and keep 88% of your revenue, but that agreement relies on using legitimate software and content. Major storefronts will not host games that contain
: You cannot simply "buy a license later" if you get caught; purchase dates are timestamped and must predate the game's release. unreal engine pirated assets