Keep in mind that at the time, Netscape was even more proprietary than Microsoft. (Layers instead of DOM, JavaScript SS instead of CSS)
And if you want to get technical about it, in theory you could support ActiveX on any platform. The problem was the controls were all Win32 software. There probably would have been some marginal benefit for Netscape to support it on Windows.
And if you want to get technical about it, in theory you could support ActiveX on any platform. The problem was the controls were all Win32 software. There probably would have been some marginal benefit for Netscape to support it on Windows.