> Any piece of valuable software will get a free version after some amount of time

Technically. The reality is much closer to "Any piece of valuable software will get a crappy free version after some amount of time, and multiple paid copies"

Most free versions of things are not as good as paid.

But it doesn't matter for many areas. Sometimes the free stuff will get better than the common paid one (linux and blender come to mind). Sometimes it takes time (Blender), but if the value is there commoditization will happen

Missing the feature of being free (as in libre) makes most paid-for software actually crappy in comparison.

But maybe other things matter more to you, that is possible of course.