To some extent marriages were always arranged. People lived in communities and partners were introduced, chosen, arranged, bought, pick-out and even contracted for you depending on what was the social and cultural thing to do. It's not until more recent history where people have waited for love, and even gone against the expected trend and not married.
But, it seems that increasingly the key difference is the ability to leave a marriage. Marriage was meant to be a life long partnership. A commitment that could not be broken even for abuse and lack of love.
So if you live in a culture where you are married unwillingly or without knowing your partner, then you still have the choice how to live with that person.
Many arranged marriages have developed into wonderful life bonds, and many love marriages have endured abuse and regret.
Still, I think there is a better chance of success if the union is based on both partners choosing willingly, and that works best with love.