You probably own something that someone else looks at and says “why would you buy that?”. A PlayStation , a mug with a cat on it, a bumper sticker about your political preferences.

You can look at all these things and ask why one such things as private citizens?

I was going to say extra range, but the 767-200 only goes 3900 nm compared to Gulfstream V 6500nm.

Boeing does sell Business Jet versions of 787 and 777 which have much longer ranges. And lots more space. Could fly half way around the world without stopping staying in your flying apartment.

Someone buys a commercial airliner, someone buys at $40B social media company.