From Commodore 64 to Apple MacBook

I think most, if not all, computer geeks’ dream personal computer is one with an apple logo stamps on it … they may use a Windows PC at work, on the road or at home but in their dream they want to buy an Apple computer. Windows PCs are good machines actually, but they just don’t have the style, personality and cult. 

I am the same as any other geeks except the fact that I bought mine 26 years late. Because somehow, 26 years ago, I bought myself the Commodore 64 insteal of the Apple II / III. Anyway, no matter it’s a Windows PC or Apple MacBook, I still have the same question – why is it so difficult to make these all work together ?