When I'm marketing a film, whether its mine or someone else's, I work with a great deal of strategy and elbow grease until the job is done. It's pretty simple really. I just dive in and start digging. Yes, I'm fortunate to know the in's and out's of a true studio-level marketing campaign. But really, anyone who is diligent and well-researched can pull it off too. Its easier for me, but it doesn't make it impossible for others.
You cannot tear up ancient rootages and safely plant the tree of liberty in soil that is not native to it.