This probably isn't nearly enough to put Rolling Stone out of business, and as I understand it merely failing to follow basic journalistic practices because the

This probably isn't nearly enough to put Rolling Stone out of business, and as I understand it merely failing to follow basic journalistic practices because the story matched up with what they want to believe wouldn't have been enough to get a defamation ruling against them. They're only in legal trouble because they repeated the false claims after concluding they were false.