Part of the problem with open source efforts such as Linux and Office clones is the shitty, nerdy interface. Great ideas, a lot of effort and hard to understand, complex interfaces. Check out Gimp, the open source alternative to Photoshop. It's very name means hobbled or a limp. Windows and panels galore...ugly, underlined menu names.
Apple made cool looking products that were easy to use. I'm not sure it would have mattered where the source of their inspiration came from. NeXT failed because their computers were too expensive. Even being incredibly ahead of their time and super easy to use, price killed their magic.
The resurgence of Apple was in being easy to use, cool, and prices that came down to earth to eventually match competitors.
Apple's challenge is to stay ahead of Android in terms of ease of use and coolness. Many people can recognize and will pay for nicely designed stuff.