Corporate power comes, largely, through government power. Corporations coopt the government and use its power to protect or enrich themselves. Why would corporations want to weaken that?
One Nation Under God: How Corporate America Invented Christian America (Basic Books, 2015)
http://kevinmkruse.com/book/one-nation-under-god/
https://www.politico.com/magazine/story/2015/04/corporate-am...
Both are horrible, let's be real.