We users can do something. A large part of my recent purchases have been driven by the ability to work seamlessly with Roon. If a manufacturer is lying to me, I want to know it. What I can do is, tell the manufacturer I am going to purchase something that is compatible with how I want to listen to my music. Be it Roon Ready, or Roon tested.
As Roon has grown in popularity manufacturers know that Roon capability is a selling factor. I imagine most play ball, but there are some cheaters out there. For those that advertise Roon Ready, but are not, they are actually maligning Roon, because if the product is Roon Ready and does not work properly the perception is Roon stinks. When in turn it is the manufacturer who stinks. If I were Roon and based on a subscription model I would not want a perception of me stinking… Just my thoughts.