As for their innovation … Apple don’t innovate any more than do Microsoft — just like the latter, they copy and cover with their own style.
Take the Windows 95 = Mac ’89 thing for instance.
Not only was the WIMP GUI concept invented at Xerox PARC in ’72 but Apple were 35 times slower to copy Xerox than Microsoft were to copy Apple — even slower, if you consider that Windows originally appeared long before 1995.
The change from MacOS ≤ 9 to OS X?
Darwin is basically simply a mix of elements of NeXTSTEP, BSD, Mach, and a few other free software projects. with an Apple styled interface — Apple’s only innovation there is the branding … which, itself, isn’t a concept they can lay claim to either, least of all simply by virtue of being good at it.