I wonder if this explains the popularity of It's a Wonderful Life. The story is well-known at this point. It was a box-office flop when first released, and fell out of copyright because the studio couldn't be bothered to renew it. As a result it played repeatedly on TV around Christmastime every year. The repeated exposure to this film, presumably also associating it with other pleasant holiday memories for audiences, transformed its reputation. To the point that it's now considered one of the best films of all time.
https://en.wikipedia.org/wiki/It%27s_a_Wonderful_Life#Recept...