Can you explain further how Mt. 12 supports that view because I am not following you at all.
-- When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and findeth none.
Given that the unclean spirit is unable to find rest, it must not be as simple as there is another person to possess. There must be some willingness to follow the deception of temptation. There is in my experience which is only in reading of Scripture or other books, that there is some promise made to people by Satan or by devils, that would entice people. Examples are the temptation of Eve, Faust, The Devil and Daniel Webster, to name a few. In the more recent stories, the story is of selling one’s soul to the devil. In the case of Adam and Eve, it appears to be more of buying into a lie than selling your soul.
And so to get back on track with Mt. 12, it cannot be that the unclean spirit was unable to find any other person. When he had gone out of the man, there was nobody around for hundreds of miles? Do unclean spirits get tired by distance? It necessarily means, in my mind that there had been attempts to find a satisfactory situation but none was so available as the place just left. It is unlikely that it left of its own accord and so it returned with reinforcements to make sure by the perfect amount of help that it could not be kept out. But the key is that while the place had been cleaned up, it had not been yet repurposed. There is not much in life you can list that is more helpful than purpose. People can survive incredible things with purpose to achieve. With no purpose of use, there is no resistance to an unclean spirit, vice, etc.
It is my opinion that it is exactly instilled purpose that is the difference between people who quit, cold turkey, or those who without clear purpose, struggle with their addictions.
As far as I can tell from Scripture, this world is not currently given to the authority of men.
Psalms 115:16
The heaven, even the heavens, are the LORD's:
but the earth hath he given to the children of men.
Satan could only tempt. Adam and Eve had to make the choice. Even with a fallen mankind, it would have been the easiest to possess Adam and Eve at the beginning when there were only two, if that were an option.
Man is responsible for his own sin. The devil made me do it is still not a viable excuse.
Satan is the god of this world (2 Cor. 4:4). The whole world lies in him--that is, in his power (1 John 5:19). He takes sinful unbelievers captive at his will---not theirs (2 Tim. 2:25-26).
In meekness instructing
those that oppose themselves; if God peradventure will
give them repentance to the acknowledging of the truth; And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
In the aforementioned verses, there is enough recognition of the fault of the individual for their own state. They oppose themselves. They need repentance.
Because they are in the state they are in, they are sitting ducks, if you will. They are easy targets to be taken at leisure.
I hope that explains a bit better.