What can you do in Solidworks that does not work in Rhino? Do you have a list of top five points, maybe?
The Wikipedia page for Rhino says it’s a CAD tool, but Solidworks says CAD and CAE. So Rhino has a subset of Solidworks’ capabilities.
Engineers use CAE to help with determining how the materials, dimensions, and other engineering choices will be have under loads. So these have some similarities in that Solidworks can also do 3D modeling, which is used as an input to performing CAE.
Different audiences and different use cases.