True, good point. But I think that mostly comes from screening and choosing correctly. If a woman has self control, empathy and family values, she will by default be open to your leadership and will assist you in the relationship.
But you're right, I doubt anything long term can ever be easy or formulaic. People can change, people can conceal themselves, etc, etc. But while 50% of marriages fail, 50% succeed. High SMV, alpha mentality, leadership and choosing the right woman will give you the best odds. Rollo's marriage seems to be going fine for now so who knows. Will be interesting to see how that develops in the future.