not sure what you are proposing here? a hardware device that can zoom on a cursor?

The Mini wouldn't make anything like what's in the demo. It's good for multi-camera-angle, one-take videos. But it would also require cameras, lights, mics, etc. And you'd want at least a Mini ISO so you can fine-tune everything in post.

It's a live video mixer that you can use to switch between various sources of input - say, a demo device (or, in my case, a device under test), a front camera (or two) facing the presenter, a top camera showing how the presenter interacts with the device... supports a bunch of transitions, and if you get yourself the ISO variant, it records all audio and video tracks uncompressed together with a bunch of metadata that allows you to import the exact same cut as it was broadcast, and fine-tune aspects of it in post to get a refined video.

I'm saying I've used, and seen used, this tool to make very cool investor pitches and videos. It's not specifically the mouse zoom thing, but more generally a great way to make super high quality, professional looking pitches when you need to show things that are live.