Your model is what sustained the personal computer industry (as standalone apps) for 30+ years before subs and webapps became so prevalent over the past decade

Your model is what sustained the personal computer industry (as standalone apps) for 30+ years before subs and webapps became so prevalent over the past decade. You might benefit from paying a bizdev type person for a couple hours (or enough for a plan) to figure out how to get some recurrence out of those apps. People absolutely paid for new versions of Eudora, for instance.