Copyright issues aside - which can be quite thorny for software this old - I imagine the people who created WordStar must take great pride in the fact that more than thirty years later, people still make good use of their creation.
Fourth years, it was first released in 1984. I had a CPM card for my Franklin clone that came with WordStar. I just used the standard Apple Writer, or whatever Franklin renamed it. At university starting in 1986 I just took my Apple ][ floppy and a 3.5 one formatted for Apple ][c & Mac and do a juggle the files over and typeset the papers using the Mac. So I never used WordStar.