In the United States, bishops are the literal owners of every diocesan property, which includes practically everything that calls itself Catholic within their jurisdiction. The odd Catholic hospital or such that is not under their literal ownership usually has the the local ordinary as an ex officio member of its board of directors. I taught at an archdiocesan high school for ten years, and the only rason I did not come to work every day and find a “closed” sign over the door was that the ordinary did not wish to close the school. It is that absolute.
“What?” you say. “This makes bishops the most wealthy people in the United States.” That is excactly correct. The Archbishop of New York could sell the plot of land on which St. Patrick’s Cathedral stands tomorrow and reap wealth beyond the dreams of avarice. It is a matter of pure trust that our bishops have this power, that they do not abuse it, and that they willingly sign what I imagine is a simple signature card when the power passes to their successor, who is appointed by no one with any legal status in the United States.
The situation in much of the rest of the world is not the same, to say the least, but I won’t go there just now.