You are partially right, but your characterization is overly broad. Yes, FOSS does often copy closed source, but when doing that it often innovates on top of it

You are partially right, but your characterization is overly broad. Yes, FOSS does often copy closed source, but when doing that it often innovates on top of it - not only in features, but in extensibility. Many open source projects become so widely used and powerful, they become a reference in the field not only because they are free, but because of their quality or feature set when compared to closed source alternatives. Examples off the top of my head are ffmpeg, qemu and Blender.