You can sit in a fancy spa or a luxury hotel anywhere and they share a lot of intentional similarities to cater to the same audience of jetsetting luxury travelers. What does a plane ticket add to the experience over a staycation at the local intercontinental?
That is why it is very common for vacations (of people who stays at Four Seasons) to start or end a business trips: I am already there, might as well get my family to join and try some new foods.