Yes, if you want to show a movie made for Omnimax in goggles capable of showing the full "half dome", it would presumably look just like an omnimax movie looks.
But that's NOT the point. Let me try it more simply. Here's a VR ride on a roller coaster on a 2D screen...
Now you with a history of demonstrating VR and me with some history of experiencing it both know we can do something different with this video. We can click on it and drag the video around to see left, right, up down, even behind us. And because we already know the VR experience, we know that instead of clicking and dragging, we can just look around and have those same views with goggles on.
We also know that the peripheral vision will be seeing more off the left & right up and down than we can see in the 2D frame of the video... that some of what is out of sight to the left will actually be visible if we were watching this with goggles on (we'd see "over there" in our peripheral vision).
Watch this video with goggles on and it very much looks like we are on this ride. Anywhere and everywhere we might look will show us sights as if we are actually there.
However, to the audience only getting to see this on a 2D screen, does any of this look any more immersive than this looks on whatever screen we are using now? No. Because what is to our left, right, up and down is not the view of the surroundings of the view we have on the coaster but whatever else is around the 2D screen around our own computer or mobile device. If we're sitting with friends and one is right over the rim of our phone, his or her head is just above the coaster track, not the sky. We're not immersed. We're watching yet another video on a phone.
It's the same if we don't make it as passive (experience) as this. Let's walk with dinosaurs. Our peripheral could see that there is a dinosaur coming up on the left long before it gets out in front of us so it shows in our 2D window of the world. If we click and drag so we can look left, we can discover it there too. But we can already do that on whatever device we are using right now. There's no magic to that. I'm clearly not there. I'm wherever I actually am looking through a rectangular window into a 3D world of dinosaurs.
Apparently there is a new 3D UI in these Goggles. If I get to see that UI only through a 2D window, do I really get it? If I see it in a 2D window, I can see the EXACT same view on any 2D screen I already own. It will look just as 3D there as it does in the demo. So what's so magical about Goggles?
You and I know because we already know what having Goggles on can do. Does the audience already have the experiences so they can take that leap that even though what they are seeing is being shown on a 2D screen, they can project themselves into it as if they have Goggles on... so they can better imagine the roller coaster ride, better imagine walking with dinosaurs and/or using the interface?
In an Ominmax half dome, I could illustrate that with various bits of the presentation that is breaking the 2D "Window" view. In Cupertino where I only have a big 2D window, I don't envision a demo being any more immersive than the roller coaster one I just shared, or walking with dinosaurs viewed the same way, or any 3D world AAA game that people have played for years now... or even a brand new 3D interface.
In my head, I need to put the audience in the goggles. I can't in a typical group presentation like WWDC. So what's next best thing? I don't think that is using a 2D screen for the whole demo. I sometimes need them to feel like they are immersed in whatever I am showing... like they have goggles on.
Would there still be room for 2D elements and the inevitable 2D TV commercials they want to show. Of course, Omnimax has no trouble isolating a rectangular 2D window out front that looks much like any other 2D theater screen. I wish I could find an Omnimax intro reel to somewhat illustrate but the next best thing is an IMAX intro reel where the opening bit (to about the 8) in the countdown is a small rectangle that then expands out into an immersive view.
Obviously, IMAX is not half dome immersive but also a gigantic 2D flat screen out front but if this was an Omnimax demo, as one is flying through numbers and such, those holes & edges, etc would been the periphery such that you would feel as if you are flying through 3D objects instead of your periphery seeing the edges of the screen, some of the walls, maybe some speakers, steps, rails, etc. of the theater.
I fully grant that Omnimax screens could not fully demo VR either... but- in my head- it could better punch the immersion... that THIS product is not limited to a rectangular window out in front of us to show us whatever we are wanting to see. And in a controlled demo, I could tell people I want to look left to see what we hear over there and discover the dinosaur or tell them I'm turning my head around to see who else is on this roller coaster with us. Yes, their heads would be fixed looking into the dome, but their view (all of what their eyes could see) would be the view that I describe and it would be very clear to them that we are not looking through a 2D window out in front of us with
this product... unlike every other major product they've ever seen from Apple.
Again, I fully understand an Ominmax demo is not going to happen... that the dazzle is going to try to be in Cupertino on a 2D screen... and I'm sure it will be impressive. I just can't quite picture HOW it will really get the PUNCH if all of the immersion potential is viewed through a 2D screen. All of us have seen 3D worlds in 2D screens for many years now. What can be shown only in a 2D screen that really screams how different this product is from everything else? I don't know.
Those guys are paid millions in part to come up with engaging product launches. I am not. If it WAS me, I want to try to put this big audience filled with influential media players fully inside the goggles. I can do this for the 5 minute demos after the big show but a 1000 stories about the goggles will already be published by then. Will they pretty fully "get it" if everything they've seen is not immersive but through a 2D window into the 3D worlds available with goggles on? Again, I don't know.