People paid Sony for music, not an invasion of their computers. Sony must right the wrong it has committed. Recalling the CD's is a beginning step in the process, but there is a whole lot more mess to clean up.
The point of copyright law is not to give people absolute control over everything they write. It's to compensate artists and authors for the works that they create.
You need incentives for people to innovate in technology. You've never needed that in businesses because if a business is successful you make money. It's its own incentive.