That would take an awful lot of guts--does anyone in the film industry have such guts?
But Mo's life story is blockbuster material. His youth as the younger husband of a rich woman who supported his "visions" from the Angel Gabriel, his attempts at convincing the local Jews that he was the Messiah-- and after his wife dies, he accumulates a stable of wives and concubines, and turns bloodthirsty. His fascinating child-bride, Aisha, who is recorded as beautiful, witty and willful . She was seventeen when Mohammed died, in legend by being poisoned by another wife who was stolen from a Jewish family he saw murdered in Medina. His dying words included a demand that none of his wives (many more than four) should be allowed to remarry.
I doubt that he turned bloodthirsty. It was always in him. He just finally got to a point where he felt safe to display what he had inside
He could not reveal his true self while his older wife was around, because she controlled the assets.