English is context-sensitive language. When reading "Unreal Engine 4 is now available to everyone for free" it was pretty clear to me (and I assume most people

English is context-sensitive language. When reading "Unreal Engine 4 is now available to everyone for free" it was pretty clear to me (and I assume most people here) from the phrasing and context that they weren't releasing it in a copy-left license or even as open-source (Actually source code access is given). Now if they had said "Unreal Engine is now available as free software" that would have been more confusing and misleading.