I think FreeDOS shows why worrying about something being "useless" isn't so productive: it probably seemed somewhat "useless" at the time, but ended up being mo

I think FreeDOS shows why worrying about something being "useless" isn't so productive: it probably seemed somewhat "useless" at the time, but ended up being more useful to more people, and for a much longer time, than initially predicted. Did anyone predict that it would be so useful, decades later, for the tech-support use-cases it enjoys now?