A "fair" share is in my view (at least) a fixed percentage. I'm not sure what "fairness" means to you? A fixed amount, per capita? Would you then throw everyon

A "fair" share is in my view (at least) a fixed percentage. I'm not sure what "fairness" means to you? A fixed amount, per capita? Would you then throw everyone not making the cut into some kind of debtors prison, or working camp? I'd argue that income is a decent enough proxy for how much utility a person derives from tax expenditures: Just protecting that income would be pretty much exactly proportional in a full anarcho/wild-west civilisation (can see this in unstable countries, where you often have a scale between "have to regularly pay off someone" to "need a private militia" to keep your gains).