Where should I begin with this? Hmm... Okay, this is the fault of local government's lack of vision (or ineffectiveness to carry out a vision, if they had vision). I know some "players" in Central Florida has the "vision thing" - such as UCF with its film school program. Disney, Uni, and (actually) any studio would have that "eco system" in place if the local government can conceptualize Orlando as being a satellite city for Hollywood and create incentives for the industry to make this happen. Incentives, such as friendly taxes, fast and easy shooting permits, zoning of studio industrial parks, etc.
I didn't say things like that couldn't have happened, but I think you miss the broader meaning of "eco-system" as the gentleman referred to.
We aren't talking about studio facilities that Disney or Universal could build, but the broader industry that envelops Los Angeles and why a filming theme park works there - because prop shops, and model makers, and costume houses, an abundance of crew of all types and specialties, etc., etc. already are there, and their choice is between studio's 30 miles from each other. You cannot replicate that eco-system with such efficiency and you end up having to ship everything across country all the time. The only other choice would be for Disney, etc. to attempt to replicate this in-house (which they sort of did), but then the point becomes - how much value does this add to a theme park to make all this worth it? I think Disney realized this rather quickly, which is why all but a handful of Disney properties themselves ever filmed there.
Could it work? Yes, but most productions utterly live or die on a budget, and there simply is no incentive. Even if that incentive came in tax breaks, etc., it's still nearly impossible to maintain the efficiency, especially for things like television (where there is far more production period) where a prime time show usually has 8 days an episode and needs can vary week to week (we need a purple chicken suit this week - think Disney has one or do we need to have one shipped from LA overnight for an extra thousand bucks?) it just makes no logistical sense.
And in the end, it really all comes down to: most people who work on a film don't want tourists around getting in the way. And I don't think Tom Cruise and Julia Roberts and Leonardo DiCaprio are going to enjoy living even temporarily in the tourist capital of the world when trying to work. The thought of filming in a theme park environment, even on controlled sound stages, still is in the center of the theme park capital. Cripes, it takes a Disney employee an hour or more from getting on property to parking and getting their shuttle and going through tunnels and changing clothes and getting to work. Sure, are some of these problems surmountable? Again, yeah - but then it just goes back to...why? So people can walk through sets and be a bother? And if they only go in when there is no filming - what fun is that? Oh, and forget outdoor shooting entirely on backlots - Florida simply has way too unpredictable (and often changing) weather.
Again, it's an idea that works in California because it was a studio that stuck a theme park on the edge. Trying to stick a movie studio into a theme park in a place with no existing external infrastructure wouldn't work with even the most generous of tax breaks and financial incentives. And to be absolutely honest, I see why Orlando hasn't bent over backwards to encourage it - they already host the largest theme park industry, and the convention industry - do they really want to be dealing with those "Hollywood folk" too? Orlando already has enough attention.
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Apparantly, distance and climate where no problem for Hollywood to move a substantial part of its business to Vancouver - when BC installed the right tax incentives.
But they likely wouldn't really be successful if they stuck a theme park in the middle of it, though.
And tax incentives aren't really why Vancover or other cities have developed small industries outside of Hollywood. They help, but if the tax incentives are in the middle of a swamp (or, a swamp with a million tourists at a time milling about), it wouldn't be the same. Filmmakers and TV producers say time and time again Vancouver is desirable because it can double for just about any city in America. That's why TV shows started to move there in the 90's - it can duplicate much larger cities (i.e. New York) but at the same time it has wilderness locations not terribly far away. American cities are incredibly expensive to film in - and not because of taxes, but because of food, lodging, police assistance, shutting down stores/roads/etc. And then they can go two hours away and find gorgeous wilderness.
You cannot say the same for Florida, LOL.