It’s a combo of things.
Product: Aside from high-end Alpha and Vapor footwear, Nike is getting flanked on both footwear sides by more nimble competitors. Don’t even get me started on apparel. I literally can’t remember the last time I saw a new apparel item that struck me as innovative or a must buy.
Marketing: The ability to mass market that catapulted Nike to success is gone. It’s all about niche marketing now, getting your cred one consumer at a time. In addition Nike marketing is now in no way inspirational. It’s bland and stale. Moreover the younger generations are much more aware that they’re constantly being marketed to…and they resent it more than previous generations.
Leadership: When I was at Nike senior leaders were competent and respected (mostly). That was when those leaders had more autonomy, less bureaucracy, less DE&I to deal with, and less “you should be offended by everything” internal culture to deal with. They were bold and made bold decisions. Sometimes those leaders messed-up. But they largely got it right. Those leaders are now mostly gone.
Mojo & Culture: Nike used to have it. For many years I would strut into work everyday myself knowing “This is THE place!” We worked very hard and produced results but played just as hard. If you’ve never been to an off-site that people were still remembering and laughing about five years later, you missed out. My last couple years at Nike however? It was a job. A job for which I was increasingly uninspired. You could see the internal culture declining and it was sad.
Nike knows what works: Innovation, product, groundbreaking marketing. It just isn’t doing those things like it used to. Nike now needs a hard reset, but one in which the RIGHT people are let go rather than the wrong people. That starts at the very top.