theorem zero_tax_when_dispersed {τ_R W E₀ : ℝ} {N : ℕ}
(h_dispersed : perHeirWealth W N ≤ E₀) :
dispersionTaxRevenue τ_R W E₀ N = 0 := by
simp only [dispersionTaxRevenue, if_pos h_dispersed]Fair Inheritance: Taxing Concentration, Not Transfer