From the Skurow Solomon Weinger booklet notes:

In parallel to the 1939 film The Wizard of Oz, which too had not been successful at the time of release, The Wix gained a life after death cult following. Diana Ross fans were the first to embrace the film and since its debut on VHS, to DVD, to streaming, TV airings and enthusiastically attended special screenings, The Wiz had become one of the most successful movie musicals to date!

Good job fans. You can influence things!