No, the future of Christianity is simply outside of the public sphere. We will live as Christians do in Muslim countries - a people apart (not by our design, but by that of the larger culture).
Tell that to John Knox Scotland.
Also, sometimes these peoples have not dared to be as forward with the gospel as they could be, because their vision was to stay alive on the earth more than it was to spread the kingdom of God.
Discretion is called for in difficult circumstances, but also the good Lord when asked WILL not MIGHT open doors. If we only ask a little of the Lord, only a little we get.