Well said. Also in the Mac world—I can't speak to other platforms—I'd say your description of Hamrick the person and business also applies to Peter Lewis, the person behind Keyboard Maestro.
My license from 1999 is still valid. I originally purchased it for doing slide scanning on an LS-2000 and once I stopped shooting film I did not use vuescan until a few years ago when I needed to do a bunch of flatbed scans. I was pleased (and rather surprised) that it still worked. I then purchased a standard edition license as a thank you for what to my mind was a remarkably principled commitment to his promise of a lifetime license.
Great story. It is also worth mentioning that Ed Hamrick himself answers all support emails. They are only a sentence or two, but it’s just a remarkable thing.