We lived all over the world when I was flying internationally early in my career, after college, (until I was senior enough to call it in on reserve and fly about once a month, lol.) Have also flown many private jets, so I think the market is there, especially among a certain niche.
Imo, they won’t need the masses looking for cheap fares to be successful. Along with others in their target demographic, a considerable number of private jet owners would love to get rid of their expenses, and yet, still enjoy a luxury experience. I know we, and many others, enjoyed flying on the supersonic Concorde, which was retired in 2003, so I’m optimistic about this new incarnation, but only time will tell.