Uh uh...
It's God's will that all come.
The decision not to believe is made by seti. He has free will.
My point is that we definitely do have free will--since we do always and only as we please--but that most people have overlooked the fact that the will always follows the nature. There are no exceptions to this. (This is by the very definition of the will as the nature's choosing faculty.)
Martin Luther has good discussion on this (see his most important book, The Bondage of the Will). Augustine also has good discussion on this.
God has a revealed will (the free offer of the gospel), but He has a more mysterious decretive will which actually regenerates certain individuals unto conversion.
(This is why we pray for people who don't believe. If God does not act in the powerful way of a supernatural renewal of the sinner's nature, that sinner will not believe the gospel. He has a nature which will not choose God. Period.)
I realize that all of this sounds strange in our day, but it is just historic Protestant theology--Lutherans, Presbyterians, Baptists, Brethren, Congregationalists, Anglicans, even early (Whitefieldian) Methodists. (It's too bad today's Protestants don't learn a whole lot of theology.)
The traditional site is a joke, an example of Satanic depravity in sheer contempt of Scripture.