Joe Minicozzi, who runs the property-data firm Urban3 out of Asheville, stood in front of a ballroom in Galveston with a parcel map of Buncombe County, North Carolina, walking the room through what his own county’s tax assessor had quietly done to his neighbors. Four point four million dollars redirected away from public schools in a single year, enough to cover more than a hundred teachers’ salaries, and none of it required a vote or a scandal. It required a property tax formula that already existed, working exactly the way it was built to work.