Again, Lawl.

And it wouldn't be as simple as a few hours of coding.
It would take days or even weeks.
Also apple wanted to be unique and have their own ****ty platform.
And an EXE is just an application that runs code.
Weather that code be C++, C# or Visual Basic.
Macs can compile and run C++ and C#, but in their own way.
So in a way Macs can run their own version of EXE.