Yup. I think that omni-directional treadmills are what's needed to make a lot of possible games feel great, but I'm not very optimistic that they'll become comm

Yup. I think that omni-directional treadmills are what's needed to make a lot of possible games feel great, but I'm not very optimistic that they'll become commonplace anytime soon. 2m x 2m is probably an overestimate (https://omni.virtuix.com/ https://omni.virtuix.com/ is selling the Omni One which seems to require 4ft x 4ft), but even then this is still much larger than existing gaming gear requires. That said, people do buy things like treadmills, exercise bikes, and ellipticals - but still I think it'd be extremely tough to make these mass-market.