A company called Virtuix already developed a treadmill like this called the Omni like 10 years ago. They have released a few home versions of it and some larger ones for arcades. They’re still refining it for mass production it seems.
Pretty sure that was basically a plastic bowl you slide around in your socks on.
Seems like it would only work for objects with large, flat bottoms—if you tried to use it barefoot it would likely rip your toes off.
This is just a crude early version. Eventually the tiles will be significantly smaller, quieter, and less prone to ripping toes off.
I wonder if a layer of Ripstop over the tiles would reduce performance. I could imagine fabric being a less expensive option than R&Ding more proprietary tech like making the tiles even smaller.
Edit: Glossed over the fact the tiles rotate. Nevermind me.