Just so we're clear: Marriott corporation is not now, nor has it ever been, owned by the Corporation of the President (i.e., the LDS church). It is a private enterprise that has no legal, financial or fiduciary connection to the LDS church whatsoever.
It is true that its founder/original owner, J. Willard Marriott, was a practicing Mormon. Many of its current owners, directors, etc. are probably LDS. But the corporation itself is entirely independent of the church.