Upload & Sell: On
From a practical standpoint, I hope that guy has very simple tastes, or a trust fund, because he has shelves full of stuff that's worth about what it weighs, as they say. Although the Texas cinema industry would be a good client for vintage gear.
Surprisingly, there is a strong niche market out there for old camera gear. You know, one man's trash...
As you say, he won't get rich. But if it lets him pursue a passion while putting groceries on the table, I say "bully" for him - you never know.
I once heard of an young man selling heavy duty equipment (painted yellow I believe) that walked away from a "sure thing" to pursue a life as a photographer. Can you believe that