Earlier quoted context omitted.
It's the inevitable consequence of strengthening corporate rights relative to individual rights: corporations take ever larger ownership of government.
I dont even understand how corporations have rights... My understanding is that in a democratic system the individual voter is the unit of currency. Sadly this gets muddied in a sea of "representatives" and lobby groups which claim to represent people...
The ACLU, Sierra Club, etc., are all corporations. They need to be corporations in order to enable their fund-raising and nationwide scope of activities. Nobody really thinks the ACLU shouldn't have the right to free speech. (Note: The ACLU was on the winning side in Citizens United.) What people are opposed to is the content of the speech that some people speak when acting through the corporate form. (Citizens United was about a movie critical of Hilary Clinton.) But if free speech means anything, it means you can't single out speech based on content.