I've been rocking my Movie Pass since when they first lowered it to $10/month last year. It only covers standard movies, and you only have 30 minutes to buy your ticket after checking in on the app. They just instituted only being able to watch a particular movie once. They are also asking some high use members to upload a photo of their ticket to verify what movie you saw. All to fight fraud they say.
I also read that they weren't offering unlimited plans for awhile, and were only selling plans that allowed you to see 4 movies a month. But according to a thread on slickdeals the unlimited for $10/mo is back while it lasts. So jump on it if you want it, or ride your existing plan until the horse is dead, but I don't think the pass itself was ever supposed to be a money maker for the company. MoviePass was supposed to be making up the cash they were bleeding by selling subscribe movie-going data from the app. And there were also plenty of rumors that the owners wanted to take the company public or sell it, and only offered the cheap unlimited pass to boost the subscriber base and make the company more attractive to a buyer or shareholders.
Lots of rumors, so who knows. At $10/mo it's been great for me because I don't work much over the winter and have plenty of free time for movies. The folks I feel bad for are those who recently bought a year subscription if the company goes belly up soon.