I don't know. About movies, see Diana Ross or Marvin Gaye's movie(s). It was just a joke. Michael and his brothers needed freedom, to develop their own musical style. It was very hard for Marvin or Stevie to get their independance. I'm not sure J5 could have it in Motown. Not sure at all.
Of course, we celebrate the 50th anniverary of motown, but this company doesn't exist anymore today. The motown sound doesn't exist anymore. Yes, it's true, Stevie keep on releasing his work on this label and there is few talented artists, but the "Motown family" is over since Gordy sold Motown.
Maybe for Jermaine, it could be a good thing, but that's all. Tito and co didn't have a huge solo career, but they build the "Jacksons sound ".