My dude, that's what they have when they actually
arrive at their destination. We're talking about what they do on the plane, or in their hotel room.
Or, perhaps easier to picture, when they're on vacation on a beach in Tahiti. They could be chauffered 20 minutes back into town to a "secure workspace" in order to have a five-minute call where someone back at their HQ [where it's the middle of the night] briefs them on a screen... or they could go into their cabana, strap this thing on, have the five minute meeting right then and there, and then go back to sipping Mai-Tais.
Executives already make this choice, this way, right now. This choice is the reason that the iPad Pro has traditionally had better "stuff" for teleconferencing than the MBP does: the iPad Pro is — or was — the thing Apple most clearly marketed to executives. Right now, executives take out the iPad Pro to take that quick cabana video-call.
For this use-case, the Apple Vision is just a one-up to everything the iPad Pro is already allowing them to do. It's more secure (nobody can watch the presentation over their shoulder); it gives the presenter back at HQ more visual field to work with to make their point; it's more discreet in how it presents them in video calls (i.e. if they're calling in while laying naked on a massage table, that won't be reflected in their 3D-model recreation); etc.
---
More realistically, though, ignore the F500 CEOs. I have a feeling that I know exactly who this was built for — and it's not them. Apple engineers aren't any more in love with the idea of serving the needs of executives than anyone else is. They throw them a bone now and then, but they have other things in mind when building the core of each product.
Now picture this: you're an Apple hardware engineer who wants to work remotely, but you were forced to work-from-office due to not just the secrecy around the Apple Vision project you're on, but also the collaboration benefits. (It's currently basically impossible to review 3D models for "feel" on a laptop; you need either a big bulky 3D TV, or some other company's big bulky HMD setup. Neither of which travels well.) But your dream? Your dream is that you can figure out a way to do everything you're currently "doing better" by being in the office — reviewing and collaborating on 3D models of the new hardware, for one important thing — while on vacation in Thailand, sitting in your rented condo, on the couch. No need to also be paying for time at a coworking space (or to even be in a town large enough to have those); the HMD is the coworking space. As long as you have wi-fi, you can do everything the engineers back at Apple HQ can do.