Eliza2 said: "Here I Am said: "But you asked why people thought it wasn't doing well, and I answered your question with fact. People think it's not doing well because financially, it's not. And unfortunately, that's what matters to keep a show running on Broadway."
OK, but do you have any actual knowledge of its weekly running costs? It's averaged $560,000 per week so far in 2019. I've seen it said many times that 50% of potential gross -- exactly where the Prom has stayed -- is a good guess as to a musical's weekly nut. How could they possibly be "hemorrhaging" money, as people here have said? More likely they are breaking close to even.
Now, is that a common indicator of a 3-year run? Of course not. But the longer they stick around, the more press they get, the more Ryan Murphys come to see the show, and the more money they make on the back end via licensing, Netflix deals, whatever.
Also, as many TV shows have shown, sometimes lightning strikes after some period of time. Particularly in the internet age, you never know when some viral video will cause a thing to take off. Not super likely, but why not stick around for a while -- at least until your landlord kicks you out.