What you describe related to government debt is a really big problem. The eco/land use thing is less so, although constructing an administrative apparatus to im

What you describe related to government debt is a really big problem. The eco/land use thing is less so, although constructing an administrative apparatus to implement that seems horrendously expensive. So enter Pigovian taxation. My very informal and unreliable impression is that most libertarian writers ( who are worth reading ) embrace a Pigou regime as a pallative for managing CO2 in the atmosphere. Some libertarians espouse land taxation. This exploits the symmetry between the role of government as protector of land ownership and how this is to be paid for. Tax land rents. And I think there's an argument to be made that income taxation is both a poor proxy for rents and very invasive.