I've been seeing a lot of 90's style clothing coming back into style. I guess everything old is eventually new again.
Around 2005 we purchased Marratech [1], which was comparable to this, always on video for multiple people, chat, whiteboards, etc. Back then, it cost about $10,000 for a license. It was eventually acquired by Google and became their video product.
The only problem wasn't the technology, it was the social aspect of always on video. We did it for the same reasons they are pitching, virtual office. In our case, it didn't work. We do have a functional virtual office now using Slack, Zoom, etc. On-demand and async communication seems to work far better than this general concept did.