AirBnB is basically a web site and a customer service operation. They don't own or run hotels.
Netflix started like that, but now they also create content. The web site part is basically operating a server farm with a halfway decent interface. The negotiation with content providers part is crucial to success. Netflix also creates content. That works more like a VC operation.
Movie making is interesting as a management problem. Strip away all the glitz, and it's a project business where a new team is formed for each project, they do a complicated one-off, and then disband. This works partly because of standardized roles and tasks. Sometimes it doesn't work, and whoever's funding the thing has to be funded for failures.
These are all industries where the question of what to do dominates the mechanics of doing it. Compare, say, a railroad, an auto company, or an aircraft company, where ongoing execution dominates. YC tends not to fund that type of company.