If they saw the writing on the wall they could open-source before they went into bankruptcy. However, that could open them up to lawsuits if it was deemed they were “destroying” their assets before they could be claimed by investors and/or creditors, but that’s a big legal gray area depending on what you can show in court. And venture capitalists have better lawyers than bankrupt companies typically do.
Depends on the kind of brick. Cinder block, most likely yeah. Orange bricks? Those are usually for looks, or to cover an outside wall. They’re too thin to be structural. Well I’d hope so anyways.
Probably against code everywhere to have a shut-off valve inside a shower, but I’m not a plumber. I’d relocate it anyways. No matter what you do it’s asking for trouble if it stays in there. But you should ask a plumber in your area, they would be familiar with the necessary codes you have to follow, especially if you’re renting out those units.