You are saying that with 3 hour trips between populations centers as big as Miami and Orlando, time-competitive with driving, it will be incapable of attracting 1% to 2% mode share of the total trips between the two population centers.

I think that there is no doubt whatsoever that if run properly with comfortable seating, the usual amenities, and at the promised travel time, it will be able to attract 1% to 2% of the total trips between the two population centers. Indeed, I think it extremely conservative, and it could well attract a 3% to 5% mode share, which would imply not modest operating profits, but quite healthy operating profits.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.