This is largely a story about excessive copyright duration. The casting requirement for this 70 year old play is based on legal threats by the estate of the author who died over 30 years ago.
> Famously, in 1988, Beckett brought legal action against a Dutch theatre company, which wanted to stage a production of Waiting for Godot, with women acting all the roles. His lawyer argued that the integrity of the text was violated because actresses were substituted for the male actors asked for in the text. The judge in the Haarlem court ruled that the integrity of the play had not been violated, because the performance showed fidelity to the dialogue and the stage directions of the play
https://eprints.qut.edu.au/86803/#:~:text=Famously%2C%20in%2....