If you need Windows programs for your work, or need the ports, or want to play games, that kinda answers the question. The Mac laptops are otherwise just better for most people. And the often-repeated "every user is different" is not really true; most people fit the mold.
I mean that most people who buy laptops fit the mold of needing web browsing, email, documents, and maybe file management. They can solve that with Windows, Mac, or maybe even Chromebook. There isn't usually a reason they need one in particular, the Mac just tends to be the nicest option, or the Chromebook if you're on a tight budget.
