Yes, I can see a plausible argument that a character is so intertwined with a well-known real-life persona that a company can't replicate a character without borrowing some of the persona's value. One might also make the case that the actor developed so much depth in an initially thin character that they deserve more credit than just acting the part.
I don't personally subscribe to the notion that the recent legal invention of intellectual property is a moral right. Capitalism has been doing just fine as a productivity motivator. We don't need to capitalize expression of ideas, let alone pure ideas. I accept the tradeoff of the temporary monopolies of copyright and patent, and I appreciate that trademark and trade secrets disincentivize bad behavior. But I have no desire to try to find new boxes to store new kinds of intellectual property, like Scarlett Johansson's right to monopolize performances of a character in an app that remind people of her performance of a character in a movie. Such a kind of property right is not necessary.
I don't personally subscribe to the notion that the recent legal invention of intellectual property is a moral right. Capitalism has been doing just fine as a productivity motivator. We don't need to capitalize expression of ideas, let alone pure ideas. I accept the tradeoff of the temporary monopolies of copyright and patent, and I appreciate that trademark and trade secrets disincentivize bad behavior. But I have no desire to try to find new boxes to store new kinds of intellectual property, like Scarlett Johansson's right to monopolize performances of a character in an app that remind people of her performance of a character in a movie. Such a kind of property right is not necessary.