There is always selling involved, be it a product or yourself.
Whether that product is a physical item or just a line of patter; it’s always about selling yourself.
The main difference that I see between early civilizations and current ones, is the needful, useful and actually producing things that they did and produced to make their daily lives and seasonal planning for continued generations of replication down the ages
and the sheer volume of direct to waste, needless, pointless and vacuous things that we put so much effort into today
Thanks Star Trek… Personal Logging is Vlogging after all