[lisper]

> the jet owner goes wherever and whenever they like

You'd think that, but it turns out not to be true. There are a lot of constraints even on the owner: weather, mechanical failure, crew members getting sick. And it's even worse for them because when something goes wrong it can be a lot harder to recover. When you're flying commercial, or even chartering, the worst-case scenario is a delay.

The only real benefit to owning a plane is that you can keep some of your stuff on board.

> a tiny sliver of a market, where brokers practically outnumber customers.

It depends. If you measure the market size in terms of customers that's probably true. If you measure it in terms of dollars, it's not. It's a question of: all else being equal, would you rather pay less than more? Most people say yes no matter how fundamentally price-insensitive they are.