Hate to say it, but agree with SpaceDog. Your article says that 18 of 108 movies were shot "Substanially" in Louisiana. That 16.7 %. And "Major Movies" are only a fraction of what is being produced in Hollywood. Television production exceedingly outstrips film production in terms of quantity by probably 20:1 (Hey look - Another made-up fact!). You are also quoting an article being presented by Louisiana itself, which is of course going to pump Louisiana up.
I mean, good for Louisiana and all, but there's not denying that the majority of production work and the majority of central locations of producers/executives and stars are in California. if Disney REALLY wanted to push production in Florida they could, and at one point they did. The fact is they did it for a while, and then changed their minds. Whether it was from expense or from lack of stars, or from humidity rotting the equipment who knows. In the end, its NOT a production studio.