The key difference with Amazon is that Amazon could choose to be profitable at any time- just raise prices ever so slightly, reducing growth in customer demand, and the stop building out its enormous logistics empire and new businesses. Amazon could have had profits for a very long time, but Bezos understands that re-investing money in the company grows the value quickly. Plus, you only pay taxes on profits.
MoviePass can't really do that. They don't have potential profits that they can just stop re-investing. They aren't spending money on investments- they just don't have income high enough to cover the costs of their product. And lots of other start-ups have the same problem right now.