I was thinking this as well. I see the GPL, and Copy Left licensing in general, as a sort of regulatory force in free software. If you want to participate the GPL will put constraints on you to play nice with others in the FOSS space.
Given what happened in the financial markets as they were deregulated I am extremely suspicious of the notion that removing the constraints of Copy Left will actually be positive in the long run. I have no doubt that it will help companies like Apple but I don't see the benefit for the wider community of developers.