The Space Development Equation, here in shortened form, is Cost of Spinship divided by number of habitats equals cost per habitat to be paid monthly as rent over the five to ten year payback period. After payback of initial capital expense, rents are controlled by market forces alone. Factors such as types of investors and initial and later tenant types are included in the completion of the Equation. I’ll let you know the outcome in my investor book arriving late in 2019, if I can do the math in that time. A detailed set of spinship plans and specs and stress analyses are required before the Equation can be presented. Chapter 8 in the current “The Space Trade Update,” explains the general plan for solving the Equation.
The Space Trade Update 