She's an especially fitting choice because this is Industrie's 'Influence'-themed issue. The model is currently riding a wave of success, but she also entered the fashion industry with a measure of notoriety due to her upper crust background and reputation for partying; later, she built her career by winning powerful industry friends*. In many ways, Delevingne's story is a case study of how influence works, demonstrating how certain kinds of privilege and connections dictate success.
And on a purely visual level, it's a stunning cover. Photographed by Alasdair McLellan, the effect is very intentional and controlled, but it's still young and simple.
*For example: one of Delevingne's first big jobs, for Burberry, was photographed by Mario Testino (working with the influential photographer puts a model on the fast track) and also featured Jourdan Dunn (Delevingne and Dunn's social media lovefest has benefitted both of their careers).