Maybe not. Florida already has more aquariums than you can shake a stick at, and probably more stadiums than teams...that local pork has already been exhausted.
People in Florida really could use a way to get from place to place without getting trapped on our horrible highways. But, as I keep saying, it’s got to be commercially viable.
This could be anything from a combination of commuter rail and taxis/vans/quickie car-rentals to your location, to long-distance rail where you get to have a nice meal and a couple of drinks and then take a taxi to your hotel and have some good car-rental options available.
I think the thing that is missing in all of this is commercial smarts, that is, somebody who has figured out how to make this really pay on a private level. Remember, the first big fortunes in the US were transportation fortunes (railways), because we live in a big country and we need to be able to get around it.
Of course the subway system works in NYC, but that's because their population density supports that river of yellow cabs one sees there. No such density in Florida.
And do we want to pack ourselves into sardine-can homes in order to take a train to work? I don't think so.