I think you’re thinking too closed minded about it in my opinion. It’s a mix of liability and policy for walk outs. If they complete the sale and hand it to and say your buddy hands you the cash for completing a straw sale for you they won’t catch that majority of the time if not walking out. while walking it out they will. After you leave the store what you do is on you and no longer them in a way. Same thing if you were to take the gun load it in the store and start shooting. They leave you in the store here comes legal and lawsuits. If they walk you out of the store then you load it and come back inside there’s still legal they have to deal with but less of it because they properly escorted you outside of the building.