It seems to me that Amazon the business doesn't really need to turn a profit as long as it's stock price stays high because then its investors are still making money.
Now the thing that Amazon has for it that Moviepass does not is that Amazon gets to collect user data and use that to sell more for itself. Moviepass seems to get to collect user data, however it doesn't own the theaters so it must find partnerships with the bigger theater chains. They're hedging that they can create such a large user base and show that they can bring a lot more traffic to theaters and with that increased traffic (and lower ticket price for the customer) will sell more concessions.
For Moviepass to work ticket prices must go down (at least for them) while theaters still make more money because of larger concession sales.
Now the thing that Amazon has for it that Moviepass does not is that Amazon gets to collect user data and use that to sell more for itself. Moviepass seems to get to collect user data, however it doesn't own the theaters so it must find partnerships with the bigger theater chains. They're hedging that they can create such a large user base and show that they can bring a lot more traffic to theaters and with that increased traffic (and lower ticket price for the customer) will sell more concessions.
For Moviepass to work ticket prices must go down (at least for them) while theaters still make more money because of larger concession sales.