The greatest mitzvah in the Torah is redeeming souls from captivity. Today that means those that are caught up in false belief systems.
Redeeming captives is different than it used to be. Once it was simply a matter of paying the ransom. Today, it’s by spreading light.
But even today there’s a monetary ransom to pay. We need technology to spread the light, it’s not for free, but a little goes a long way.