Occam's Razor argues that Sam simply wanted ScarJo's voice, but couldn't get it, so they came up with a legally probably technically OK but ethically murky clone.
Similarly, other companies might be inadvertently playing the long game by forming a better (legal/technical) foundation w.r.t. OpenAI and will silently replace them when they slow down or burn themselves out, because I think that OpenAI is at overdrive, and showing signs of overheating now.