On Tue, Feb 18, 2020 at 5:58 PM Theodore Y. Ts'o <tytso@mit.edu> wrote:

It seems that you are primarily arguing that the idea of "Open
Systems" predates that of the Free Software and Open Source movements.
That's no doubt true, chronologically speaking. However, for those of
us who came up a bit after you, from our perspective, the "Open
Systems" movement *failed*.

If your measurement of success was getting access to sources, yes it failed. But if you measurement was making UNIX the standard for all computers in the future -- it was wildly successful. It's a bit of perception I suspect. We were tired of having to deal with VMS et al.

That said, you were tired of the UNIX wars -- which is a reasonable view.