You're right. I'm sure they have been using Tesla's ether tech for a very long time already. Since they also need to tell us the truth (at least indirectly), sci-fi movies like Star Wars are perfect for rubbing a mixture of such truths and other lies in our faces. They can also easily encode these movies with messages that might otherwise be difficult in other movie genres. The Matrix is another perfect example. (Alternatively, they also use cartoons like the Simpsons and Family Guy.)