"It's the formulaic studio movies the make money, and when they do, the actors in them are automatically movie stars"

In this quote, Mickey Rourke is essentially saying that Hollywood tends to produce repetitive, predictable motion pictures that use a formula that is guaranteed to make money. When these films do earn money, the actors who star in them are automatically considered "movie stars" regardless of their actual skill or ability. This is because the success of the movie is often credited to the star power of the stars instead of the quality of the story or filmmaking. Rourke might be slamming the industry for prioritizing revenue over artistic integrity and rewarding actors for their marketability instead of their acting skills.