Several light rail and heavy rail systems had been talked about in Orlando metro for over a decade. But Disney would only support any rail plan that avoided I-Drive, competing theme parks, and the Convention Center, and insisted any rail project had to offer direct service from the airport to WDW without intermediate stops. That Disney demand killed any ability to get the various projects off the ground because a metro area rail system must serve a variety of housing and employment centers, not just be an express train from the airport to WDW paid for by taxpayers.
A typical newspaper article from the 2000's... http://articles.orlandosentinel.com/2003-10-27/news/0310270326_1_route-bee-line-Disney
With typical blunt "Our Way or the Highway" statements about local politicians from Disney execs of that era....
"Disney refuses to cooperate with a Bee Line train... "I'd be terribly surprised if any of the people on that authority would be willing to roll the dice," said Tom Lewis Jr., Disney vice president for transportation development."
Things were icy. And the plans went nowhere. And then Disney invented Magical Express.
SunRail finally got built a decade later, but it is a heavy rail commuter line from the northern suburbs to downtown. It's only 30 miles long and should have been Light Rail for ease of long term operation, but it was cheaper to use existing heavy rail tracks and so they are running heavy trains on old freight track for short stop/go distances. But at least it's a train carrying a whopping 3,000 riders per day.
SunRail doesn't serve the airport and gets nowhere near any theme parks or tourist centers, thus staying off Disney's radar.