I think its important that Articulate start talking about it, rather than avoiding the issue. The subscription models offered by Adobe caters for support of both Mac & Windows. The 360 model pioneered by Microsoft does the same for its most important software (Office). Articulate has been for years hinting that support "may" be coming, yet have committed to nothing.
At this point I'm paying for Articulate 360, VM Software, Microsoft Windows and maintaining an Adobe Captivate subscription when the PITA nature of handing over assets from the VM to OS X becomes too tiresome.
I wish I could say I'm the only one taking this approach but I'm not. I want to invest more time in Storyline but the very nature of the VM solution Articulate advocates, creates a workflow that is slower than just jumping into Captivate instead. I don't enjoy Adobe software, but I can't sustain a longer and more painful workflow as well.
The lack of native Mac support for Storyline simply makes the remaining offering in Articulate 360 that is accessible without VM, more expensive and less value for money.