your're right, taking into account that there are hundreds copies of Handsontable Pro on GitHub, there's probably no point in keeping the code private on our side. Thanks for your feedback, that actually only reinforces our skeptical thoughts about the current process of downloading and installing the commercial version.
Would you like to discuss it further with us? Should we keep the MIT version and commercial one (both published on GH) or maybe merge them into one package and release under some free for non-commercial license (no more MIT version)? What do you think would fit your needs best?