I think that depends on whether or not the ticket is something like 50x more expensive.

If Musk is proposing this idea then I assume it won't be too expensive, even for rich people. So it should cost significantly less than what private jet trip costs them (because the BFR is not so private after all).

Of course, the faster time to destination should also balance things out, but I have a feeling a trip would be more like 2h with the boat trips and waiting time included, because as others have said, I doubt the launchpad will be that close to shore.