Koehane advocates for the return of DB pans, not DC. Read here. DC is a bad option, unless you are the banks and financial corporations making billions annually from those plans. 
http://business.financialpost.com/executive/ceo-of-the-year/a-social-welfare-crisis-alternative-ceo-of-successful-pension-fund-offers-case-for-private-sector-re-adoption-of-defined-benefit-pensions

Note in the attached survey that 2/3 agree DB should be made available to all on a similar basis - i.e. deducted from compensation as is the case with PS plans in Ontario where the employer has ZERO liability beyond the payroll deductions.