While that sounds very good on paper, in reality it's going to be an issue unless they have a good way of keeping track of the sales of the franchises. If you buy into McDonalds you have Millions of dollars on the line and performance metrics to keep up with and thus it's easier for the parent company to keep you in line. If you're only investing $3000, it's easy enough to just mix in 50% beans from other/cheaper sources and claim your selling 50% less then you are. This is a solvable problem but to think the agreement they sign will be enough is naive.
McDonald's was way ahead of everybody in this element of franchising strategy. Almost everything is McDonald's branded and must be purchased from Martin-Brower, their wholly owned distribution arm. (This is back in 1980, but back then the only food elements not McD-branded were the mustard, produce, eggs, and milk... and even those items had to be purchased from and delivered by Martin-Brower).
