

Valve could prevent this by doing it like the Steam Deck and requiring an x year old Steam account with at least y game purchases on it to be allowed to order one. Businesses aren’t going to grab secondhand consumer hardware to save a buck, and even if they are the majority of Machine buyers wouldn’t be looking to sell (and the margin necessary to get someone to effectively put the price of a Machine on layaway then ship it to some business and pay taxes twice will probably erase any gains the company would possibly see from using Steam Machines instead of Optiplexes)
Analog and gravity-based ones exist and only make you look slightly more like a tool than Smart Glasses