This will THOROUGHLY upset...
Many proprietary developers of GIS software, some real estate/realty offices.
If it turns into people "outting" undisclosed, private (vs non-public) commercial entites, some will be upset. Imagine people paying daily visits to offce parks, skyscrapers, and other buildings to pore over tenant boards/lists and roam halways sniffing WI-FI to determine what types of businesses are behind unlabled, locked, mysterious doors.
Some government agencies will like it if it helps them reassess properties and to sleuth out corporate tax scofflaws.
Politicians will love it if it helps them redistrict, though...