I had a few properties in neighborhoods where the A/C compressors were getting stolen. I went to having them installed without a disconnect switch on the outside of the house. Then when the property sold, I would install the disconnect the day before closing.
That does not stop them around here. I know a home builder a/c’s stolen so he started installing them the night before closing. Then they would steal them first thing in the morning. Now he only installs after closing.