I don't think that's true, because industrialising takes capital, a lot of it. If all these countries tried developing using indigenous rural sources of capital

I don't think that's true, because industrialising takes capital, a lot of it. If all these countries tried developing using indigenous rural sources of capital it would take generations. But foreigners aren't going to invest capital if they don't get rights and guarantees, and that means at least some level of liberalisation.