1) That those who establish a land trust for the benefit of their posterity (aka a "nation") have a right set up the internal rules of the land trust in whatever manner they believe will be most beneficial. (They can freely choose the terms of their social contract.)
Funny you call it a land trust. It suffices to call it a government, and until recently, "rights" beyond what might could secure is all the legitimacy it was based on.
2) That concentrations of wealth may be beneficial.
Unquestionably beneficial, all other existence is the hand-to-mouth of the bushmen.
3) That charging a use fee for those property rights makes sense but only a) when the property rights enjoyed by a household exceeds the level of property a head of household would self-defend in "the state of nature", b) the in place liquidation value is used, and c) only if the rate is equal to the risk free interest rate. NOTE: I do not include defense against "gangs" let alone governments in "the state of nature" since those group entities imply a social contract.
a) It makes sense to charge a "use fee" for the Property rights you seem to be claiming government is creating no matter what degree of property is involved--no one dollar is worth more or less than another dollar, or stuff in kind. The only argument I can see for any sort of progressivism in taxation I can see is avoiding inefficient circular flows of money. Also, there is no state of nature but what we are all in. In fact I'm quite confident "human nature" is the norm for all tool users, universe wide.
b) I think if property taxes are to be collected, then they should voluntarily based, let the owner name the value they will pay tax on, and the taxing authority feels it is low, then they can take it at that price--should make Keloes, et al, a thing of the past.
c) "only if the rate is equal to the risk free interest rate." Why should it be that?
Gates did not, persecutions successful and not notwithstanding, do one criminal thing in acquiring his wealth, or one immoral thing. Witness ravingdave being unable to mention one concept MS copied from Apple which Apple itself originated.
And no, governments, even popularly elected ones, cannot make rightly whatever rules they wish. If a sufficiently large population fraction is opposed by a sufficiently uninterested or small population fraction, they can enforce what they want--that's a different thing.
Yours, TDP, ml, msl, & pfpp
PS. I believe you were using the term rent seeking in the sense of "securing an advantage", is that correct?