Ah... I see what you're saying. I thought MMM's way to go was something through dividend by his quote in his famous post about where to invest money.
"But then what do I do with all the money?
You invest it. In stock index funds, in paying off your own house, in rental houses if you are interested in local real estate, and in other sources as you continue to learn about making money work for you. As of 2016, my own retirement income comes from a dead-simple asset allocation: a bunch of index funds at Vanguard and Betterment which pay quarterly dividends.
Maybe I put too much emphasis on the dividend part?