Implicit here is the assumption that (a) when evaluating many franchises McD is still attractive for new owner operators despite the obvious flaw, or (b) switch

Implicit here is the assumption that (a) when evaluating many franchises McD is still attractive for new owner operators despite the obvious flaw, or (b) switching costs are high for existing McD owner operator victims, and the issue wasn't known or believed to be this bad when they started.