You are assuming that they are not liable for the light that they do have.
Romans one says they are.
Therefore, they have zero chance before the preaching of Christ, and they have a real chance after the preaching of Christ.
My comments were more to P-Marlowe who states:
"In regard to the latter, each man shall be responsible for the light that he is given. As Jesus noted in John Chapter 9, to those who are truly blind, those to whom no light has been given, their sin shall not remain."
I think it would be his claim that those who who have not heard the preaching of Christ are off the hook. Maybe you should address this issue to him??
Also, I'm not exactly sure what you mean by light. Is this light the Gospel that is preached to me? Or is this light a measure of my intellect? Or is this light an indication of the grace that God has given me? Please explain in more detail...
That is how it is set up. That is reality. Whether or not it is "fair" is irrelevant. It simultaneously satisfies God's holiness and justice as well as his love and mercy.