I dont think this is it as we've had radio and music since the 50s and mp3 audiobooks since the early 2000's.

I think this is just the communal values of that society. Its not entirely some weird transaction about being entertained, and that's just a really mercenary way to see human life.

A lot of cultures, especially in more rural areas, pity or feel responsibility for people walking far and will just offer them rides. Especially if there's risk in that area from storms or criminals or wild animals. Its something we've been doing since forever. I don't think its based on entertainment. I think talking and sharing is just a normal part of being human.