I reckon it is a good investment for many CEOs. There time is worth FAR MORE to their companies than whatever a jet costs to run, the saved time is invaluable as is the clarity that comes with better conditions when flying.
Cuz it was important.
Many people schedule meetings to end right before they have to leave for the airport and catch the last flight back home for another important meeting the next day. Would prefer that someone making decisions impacting the livelihoods of thousands of people each day is focused on the issue at hand, not catching the next flight.
Being able to show up, in-person, walk around, shake hands, interview the customer, look them in the eye, walk their factory floor or otherwise see things first hand and then still make it home to put the kids in bed is far more impression setting than dialing into a video call.
What little I've used mine for business, being able to be out and back the same day, direct, makes it more likely that I'll bother to show up (vs call or visit annually). Video conferences are better than phone calls, but a poor substitute for an in-person visit.
Not saying every meeting has technical issues, or even most of them, but some do and finding a technology that everyone who needs to be in the meeting can use given different corporate standards is a PITA.
It's still also no substitute for meeting face to face over the long term.