The reason Cam Mack ultimately chose the Majestic for Phantom, even though Bjornson didn't want it because you can't see the chandelier from the back half of the orchestra seats, is because the Shuberts agreed to pay for the insane amount of construction needed to make the show a copy of the London version. The London Phantom had all of that machinery already in the stage floor. At the Majestic, they had to blow up solid bedrock in order to get the candleabra to fit under the stage. They had to move structural beams backstage to fit the show. No other theater on Broadway is going to be able to accommodate the show in its current form. Which is why when the inevitable revival (ugh I hate even saying that word about Phantom) comes, it will be with candelabra tracked in from the side like on tour, and projections of the Opera roof, the porticullis, all of the backdrops instead of real pieces flown in. Cam Mack will herald himself as the savior of Phantom and his henchman Seth Skylar Heyn will enthusiastically market the revival as one that "speaks to today's audiences" and is a "Phantom for the 21st century". Jersey Boys and Avenue Q both waited til right around their closing performance to announce they were moving off Broadway. I could see Cam Mack waiting til then for ultimate dramatic effect. Isn't the 3rd National Tour set still in storage somewhere? They could use that and hack it up some more to avoid paying Bjornson.
As we keep repeating now, Cam Mack is still making money off of Phantom, but not as much as he would make if he could cut out the Prince Bjornson and Lynne estates. We know he wouldn't bargain with them after what he did to Trevor Nunn and John Caird with Les Miz because they said if he had asked them, they would have figured out a way to keep the original staging at a cheaper price. He wants to cut them out, but the only way to do that is to shut the show down now. He knows that the VAST majority of Phantom's audiences have no idea who Prince or Bjornson are and half of them think New York is just another stop on the tour and they could see the same exact show the next time it shows up in Wichita or Columbus or Sao Paolo for that matter.