I must admit, that's the usage scenario for Starship that I don't particularly see much benefit in. I may well be short-sighted, but given how far away from cities the launch centres for these things would need to be, it strikes me that traditional travel infrastructure suffices.
Now, the US military, on the other hand? Starship as a somewhat-disposable space truck makes a lot of sense. Then it comes down to how cheaply SpaceX can manufacture the things.
I imagine the geopolitical efforts involved in coordinating to allow passenger ICBM launches at major cities in the industrialized west is on the same order of the effort involved in designing and building starship itself.
You make the mistake of assuming the uber-rich want to get to Fiji as soon as possible, when in reality they would rather spend the 8 hrs in their private Gulfstream in a cocaine fueled orgy while the pilot does barrel rolls and loops. Flying is one of the few times that the Uber rich can really disconnect and be alone and relax, why would they want to get to Fiji in an hour in a super stressful flight?
Yeah I don't think it makes much sense, at least not for a long time. Odds of a plane crashing are on the order of 1 in 10^7. On the other hand, it was a major accomplishment that the Falcon 9 was able to perform 100 successful missions in a row. Rockets have to be safer by many orders of magnitude before they move from the realm of thrill seeking to commercial travel.
Not sure why you were downvoted - for sure, we have alert systems these days so that test ICBMs and rocket launches aren't misinterpreted by foreign actors, and we would in any future where there were tens, hundreds, thousands of launches a day - but as-equally, it would be a lot easier to mask nefarious intentions in such traffic.
Irrespective of nukes, I shudder to imagine what the impact of an out of control de-orbiting Starship would do at ballistic reentry over a populace... .
Now, the US military, on the other hand? Starship as a somewhat-disposable space truck makes a lot of sense. Then it comes down to how cheaply SpaceX can manufacture the things.