The sick truth is that the parents often pushed for it.
In her autobiography, the late Shirley Temple said the only reason nothing like that ever happened when she began show work, was because her mother was sitting right on side of the stage, for every single rehearsal and filming. She said some of her other friends “like Judy Garland” were not so lucky.
Judy’s mother wanted her daughter “to be nicer to the producers giving her all that work”.