First Mr. Wingnut, as a Past Moderator at this forum, may I say "welcome aboard'.
While Orlando-Tampa certainly appears to be a worthy short distance rail passenger market, the impetus for such must come from Local level, with matching Federal funding for equipment through the Federal Transit Administration (FTA ne UMTA). Despite a need for rail service in this corridor, and I would consider need to be measured if the far more costly alternative of "four-laning' I-4 was delayed or maybe avoided in its entirety, Florida is not that friendly a state to mass transportation interests.
Lest we forget, circa 2K, the people of Florida first said yes to an initiative that would have developed a high-speed rail system connecting the State's major cities, but when confronted with the cost of such, quickly changed their minds and said "no". Diverting momentarily to the South, I am mindful, that West Palm-Miami Tri-Rail has attained some, but hardly "blockbuster", degree of public acceptance. While I have noted over the years how communities comprising residences and commerce have been built around the line, the fact is that Tri Rail does not serve ANY established downtown business district other than West Palm. But it soldiers on and is here to stay.
Meanwhile back in Central Florida, there is an initiative moving forth (on life support at the moment, but in a political world....?) that would provide regional rail service through Orange and Osceola counties, which would include Downtown Orlando and come reasonably close to both the Airport (KMCO) and The Rodent. One not previously informed may ask 'why the fixation on County lines?". The answer is that under State law in order for a mass transit, rail or bus, to move forth there must be an excise (usually a "Sales") tax imposed at County level dedicating to fund the initiative. While such ensures that the sponsors need not play the annual "Perils of Pauline' charades Amtrak must, falling that Local tax, nothing moves forth. On that point, again taking a quick "jog down below", expansion of Tri-Rail North of West Palm into fast growing Martin County has been blocked as that County has not been willing to impose the required excise tax.
Finally, while it would appear that the deck is stacked against mass transit in a state in which such is needed, this is nevertheless the "facts of life' as I understand them. Obviously, there are interests within the state, namely auto rental and lodging not conveniently located to mass transportation, as well as the fact that 99% of people have a car" and simply because they are on vacation are not about to change their lifestyle and do without such (I know I'm not). While I'm not saying "forget it" regarding any local rail initiatives (Orlando-Tampa is simply beyond the scope of Federal funding i.e. Amtrak), recognize the political facts of life and work within such.