theorem marketplace_rescue {R_mp c_min φ : ℝ}
(hR : 0 < R_mp) (_hcR : c_min < R_mp)
(hφ : c_min / R_mp < φ) :
c_min < totalRevenue 0 R_mp φ := by
unfold totalRevenue; simp only [mul_zero, zero_add]
rwa [div_lt_iff₀ hR] at hφPaper 10: The Knowledge Commons Paradox: