I won't be disclosing too much information about the idea YET, but believe me, it is true and possible. There is also one "lie" inside my sentence from last post, but not that big and it hides the answer to your question (not mining nor third-party advertising).
As I told in a first post, this is going to be an ecosystem rather than just movie streaming platform.
Well, the money has to come from some place, so someone is going to have to pay for it. The movie industry is definitely not going to foot the bill for this, so it will have to come from the consumer or the advertisers or the content provider.
The best funding method must be the consumer, but they will have to pay much less for the content than what is currently provided by services like Netflix.
A monetized Pirate Bay with micro payments for content must be the solution. The user pay for the content and a portion goes to the content creator.