Misunderstanding of demons and the Bible itself. The scriptures and the prophets are what would be considered divinely inspired. The creation of the Bible was not inspired.
The KJV version for example was suppose to also include a new piece from Ethopia, I can not remember the title, it was something about rulership or kingly rulership.
The reason the Bible was claimed to be inspired is because during the time of the reformation in Europe, they were claiming divine inspiration to justify anarchy. The Catholic Church had become corrupt, yes, but they were using that as an excuse to usurp the previous rulers. The Catholic Church that spawned after the reformation was actually much worse than what was before it.
You can read a great deal about it in various history books. Oliver Cromwell was actually very daibolical, he used Martin Luther as sort of a mascot religious figure puppet to bring people into the Protestant mindset (protester of the Catholic system of rulership). He seemed to have only used religion as a politician would, he used it because that was the easiest way to rally people, by "speaking their language" as he put it. This is most likely why many western "Christians" have a history that belives America to have some divine backing behind it, they were basically duped by politician tactics from the late middle ages.
Martin Luther was also deemed somewhat of a hero by the Reformist and an enemy by the Catholic Church, today both sides exaggerate his actions, as based on his writings he didn't seem very impressive of a theologian, he could recite psalms, or so he claimed to, but he lacked spiritual understanding and struggled with the concept of faith and works, constantly jumping back and forth becoming confused with Paul's and Jame's writings. I wouldn't follow the man if I was blind.
While there is nothing in the bound scriptures that implies Demons can live in inannimate objects, you can assume they can, if you take into account them being able to enter animals like pigs.
Demons also don't seem to be THAT powerful as people seemed to have mention. Based on what I've studied I'm lead to believe that TV and shows portray their behavior in a hyperbolic fashion.
When considering the first century belivers had access to Enoch, it seems to imply that demons are actually the spirit of dead Giants, and that due to the fact that they were an unatural creation between the messengers and men, they had no holding place created for them, so they were bound to earth. In hebrew scriptures the center of the Earth holds the spirits of man, one side called the Bossom of Abraham, the other side holds the spirits that will revieve judgement in the lake of fire. Witnesses of course claim that the lake of fire is immediate destruction, but as far as I know there is nothing in this realm, that "ceases to exist" but everything changes its form. Even a dead human's body and flesh still turn to dust and return to the earth.
In any case, the spirits of giants were suppose to linger in the earthly plane until their set judgement. Which is why when the Mashiyak was confronting legion they said it was not time for their judgement and instead of "tormenting" them he sent them into some swine.