The notion that the pop songs of today will become the folk songs of the future is spurious. It suggests that folk songs and old songs are interchangeable - they are not. Pop songs differ from folk songs in many ways, not least in the range of themes they cover. Pop songs are predominantly about love and romance and almost always in the first person. Love and relationships in folk songs can be first of third person and often include developed plots. But folk songs also cover the themes of travel, food and drink, immigration, law and order and crime, separation, war, politics, class struggle, work and unemployment etc, etc. In pop songs, where these themes are touched upon they are few and far between and seldom with any depth or enlightenment. There are seldom any good stories in pop songs that will stand the test of time.

By the way, I like pop music and was a massive Beatles fan. The Fab Four were not folkies though!