In my article, “The Silent Role of Corporate Theory in the Supreme Court’s Campaign Finance Cases,” 15 U. Pa. J. Const. L. 831, I criticized the Supreme Court justices for failing to acknowledge the role of competing conceptualizations of the corporation in their corporate political speech cases. I noted, however, that former Chief Justice Rehnquist was arguably the lone modern justice to deserve at least some praise in this area.
Justice Rehnquist's stand-alone dissent in Bellotti provides arguably the sole example in these opinions of a Justice affirmatively adopting a theory of the corporation for purposes of determining the constitutional rights of corporations–though not via the express adoption of one of the traditionally recognized theories. Specifically, Justice Rehnquist relied on Justice Marshall's Dartmouth College opinion to conclude that: “Since it cannot be disputed that the mere creation of a corporation does not invest it with all the liberties enjoyed by natural persons . . . our inquiry must seek to determine which constitutional protections are ‘incidental to its very existence.”’ Thus, while it may be true that “a corporation's right of commercial speech . . . might be considered necessarily incidental to the business of a commercial corporation[, i]t cannot be so readily concluded that the right of political expression is equally necessary to carry out the functions of a corporation organized for commercial purposes.” I would argue that this is a formulation most aligned with concession theory because not only does Justice Rehnquist rely on Dartmouth College, but he also goes on to say: “I would think that any particular form of organization upon which the State confers special privileges or immunities different from those of natural persons would be subject to like regulation, whether the organization is a labor union, a partnership, a trade association, or a corporation.” Stefan J. Padfield, The Silent Role of Corporate Theory in the Supreme Court's Campaign Finance Cases, 15 U. Pa. J. Const. L. 831, 853 (2013) (quoting First Nat'l Bank of Bos. v. Bellotti, 435 U.S. 765 (1978)).
While this is only one data point, I think it suggests the former Chief Justice would have been hesitant to grant corporations any form of free exercise rights, since it is difficult to see how free exercise rights are more incidental to a corporation’s existence than political speech rights. Cf. Kent Greenawalt, Religion and the Rehnquist Court, 99 Nw. U. L. Rev. 145, 146 (2004) (“With limited qualifications, the Rehnquist Court has abandoned the possibility of constitutionally-required free exercise exemptions.”).
For more on concession theory, I shamelessly suggest my more recent article, “Rehabilitating Concession Theory,” 66 Okla. L. Rev. 327 (2014) (“the reports of concession theory's demise have been greatly exaggerated”). And if you find that of interest, you can check out my latest SSRN posting, “Corporate Social Responsibility & Concession Theory.”