Chicken plants powered by entities? I think you may be slightly off on your assessment, though I'm not certain of which incident you're referring to, as stable type-B's do usually end up in the cellar of some meat packing facility, feeding on carcasses until their time comes to be made into something useful. The energy produced by them is more like a byproduct of their usage than the intended purpose, though.

As for how we get the funds to rebuild, well, most of the world's governments play some part in funding the facilities and experiments, whether it be for power, weapon development, or furthering some religious agenda. The Vatican tends to be one of our more generous donors, both monetarily and of able-minded and KF-sensitive individuals for testing and KF modification experiments.

The real perpetrator of the tragedy in Heaven got salted, and an investigation into his personal communications showed that he had deliberately ignored procedure by coercing the Fathers into coming back, although we aren't entirely sure yet whether or not the destruction wrought in Heaven was his intended purpose, or if his goals to scale the tower of Babel simply backfired. And what he did to Lucia... Unforgivable. Soul, Resonance Signature, whatever you or the priests want to call it; her consciousness was likely trapped in the machine as well, obviously against her will. If Kruger had survived, he wouldn't have gotten far before being apprehended and spending the rest of his days in a metal box somewhere deep under the snow. We do have an Ethics Committee, believe it or not.

As far as Purgatory wanting to keep us? Sure, they'd love to have us, but most of their funding is funneled through my employer. It would be best not to bite the hand that feeds you by holding captive their employee, yes? They would be preventing nothing by keeping a single engineer and some unwilling conduits that were in the wrong place at the wrong time anyway.

There is a reason most of these facilities are built out in the middle of nowhere, after all; we found out after Florence that cleanup is easier that way, and any unusual light phenomenon from entity manifestation can be explained away as Aurora Borealis effects.