Those two are nothing more than con artist, and those who buy into this con are looking for material goods not spiritual gifts. If they had read and studied scriptures then they would have seen that those two were not teaching truth of scripture, the ones who gave reaped what they sowed, nothing, they got exactly what scripture teaches. It is always smart to research those thing one invests in, people who do not read and study scripture will always wind up disappointed. They are not true christians, if they were they would have taught sacrifce instead of prosperity. Scriptures do not give a truth of material prosperity, it does teach of spiritual prosperity in a relationship with Christ. It is true that God does grace some christians with great wealth, that comes from His will for their lives.
God loves those who believe and those who do not and the same goes for me, you have no choice in this matter. That puts the matter of total free will to rest.