I guess im confused you say im wrong? Than in the same paragraph you say im right?? IF any private property any where in the united states doesn't want you to have a firearm on the said property you cannot. They can ask you to leave Or you will be arrested. Or private business! Not hard to figure out. And most companies have a NO firearm rule. Key WORD is (Private)...
Some have tried to say their vehicle is private property. Which in case is true. But Judges have ruled it is subject to search once it enters private property. So many people here in Indiana park their vehicle on the side street and walk over to their factory. hence it is public property and they may keep their firearm in the vehicle.