From the article:
When we went to our seats, the wait staff let us know that despite the fact that the previews were playing, we wouldn’t know until the movie actually started whether we could see the film or not. If it didn’t work, the screen would just turn black. Luckily, the film went through without a hitch.
I doubt the investors are smart enough to understand the technology behind it. All they probably hear and fully understand is the part where they can potentially make more money in the long run.