Well, I think it just depends on the circumstances, so it's not completely accurate to suggest that police won't respond to a property offence no matter what. It depends on the circumstances.
If a person phones 911 and describes a set of circumstances where there's a heightened sense of risk to the individual or to the property owner, then the priority in terms of a response is much higher. On the other hand, if there is less risk, then the call is prioritized in a different manner.
It depends on the circumstances, but if you're talking about a 100-acre piece of property and an observation that someone was seen on a piece of property miles away from the caller or the potential victim, then it may be, depending on what else is going on, that it takes longer to respond.