I wonder why we all assume that what "I do" makes me one of the
"Most profitable" LOL!
I expect that Marriott has a pretty good idea after all these years of what the "promotion" costs and earns and feels like the Visa link pays more then the travelers who will stomp thier feet and head to Starwood or Hilton.
As for me I have been on both sides but did not take it as a personal attack when Marriott announced something like this. It's just business not a "Marriott doesn't love me" moment! (And no, they don't love you, they love $$$ Marriott is a corporation!)