There’s nothing here because my brain is smooth and I have no original thoughts. You made a mistake coming here.
Technically the OS isn’t free: Valve pays a team of developers to maintain the SteamOS and also donates money to Arch and Ubuntu foundations as well as to the Proton and Wine dev teams as well as contributes code to the linux kernel. All costing them money, that they eat but could easily find a way to charge the end user
I was rhetorically speaking, so if you feel targeted, it’s you projecting some sort of guilt, home slice.