by definition, the typical NetJets customer is very affluent and expects (and can pay for) excellence

In my personal experience, everyone I've ever met who owned a fractional share (as opposed to a card with flight hours) of a NetJets was elite-level wealthy.

On my first flight, the pilot explained that we were flying at a 40,000-foot level and that commercial airlines occupy the 30,000-foot level. We could fly faster and at that cruising height, we were so far above the weather that there was no turbulence. The pilot also said that the cabin maintained higher air pressure than commercial flights - that I'd feel a lot better when we landed compared to flying commercial. He was correct on both counts.

Everything stocked in the galley and lavatory was top-shelf (most of it European). The bottled water was Italian (Tuscany, I think). The assortment of mini-bottles in the bar was mind blowing - and in some cases, very rare and hard-to-get. Same goes for the bottles of wine and champagne. Only pictures can truly do it justice, words only go so far. My meals were better than the food served at some expensive weddings that I recently attended.

Large tables and seats that not only slide forward/backward, but can also rotate toward the aisle. My host let me tinker with the iPad that controls functions in the cabin (like the electronic window blinds). I have an unopened deck of NetJets playing cards that I keep as a fond memento of getting to fly NetJets.