I know its not the same thing, but here locally there are seven golf courses, four of which have the GPS enabled electronic screens that tell the Proshop where each cart is, and also tell each cart how far they are to the pin.. all of them have a little button that is for medical emergencies, when the button is pressed the local first responders and the proshop are both called.
When the proshop gets that call someone (with the training) is sposed to grab the FAK and AED and rush out to the location of the cart and provide first aid until the first responders can get there to take over.
This button is pressed fairly often, and most of the time the 'medical emergency' is 'I'm out of beer, did you bring more?'. After several of those false calls (and they were all charged for the emergency call to the first responders btw) it began to take longer for the first responders to respond. After a week or two, at the rate of three to four false calls (with no real emergencies) a week, the first responders soon said that they were going to stop responding to the calls until it was confirmed by the staff on hand, and who could blame them.
After another few weeks the proshop staff began sending one of the untrained staff members with a radio to check and see if the call was for real. After about a week of that, the staff that was being sent out to check on the situation began to slack off and began takeing longer to get out to the cart themselves (I'll just get these people comeing off the course real quick so I don't miss the tip).
When there eventually was a real medical emergency, from the time that the button was pressed till the first responders arrived was over an hour. I don't remember what happened to the guy.

As I said, I know its not the same, but something like this would be what I was afraid of happening. That being said, I can't afford a PLB at their current price.
If I feel that the situation calls for me to have a PLB (deep woods backpacking, long driveing trips where I might pass through remote areas, etc) I can rent one for a fraction of the price, and the Rental price is more then likely going to fall greatly as the price of the PLB comes down and the tech becomes more widely available.
If I start useing one often enough (which I can't see needing in my present circumstance) I will gladly shell out the cash on credit and work for a year or two to fully pay back the unbudgeted amount.
I feel that if the price becomes too low, perhaps a one use SAR Insureance coverage by the PLB manufacturer could be added into the price and included with the guarantee of the product, if it isn't allready, that would protect you from X amount of cost if you have to activate the PLB for a genuine reason.
Or something similar to keep the price at a level where those people who would push that button for 'medical emergencies' that only require 'another six pack of beer' thinking twice, if they get one, about useing it for such trival things, as long as its Non-Government (The government already takes enough of my money then tries to sound like I should be grateful when they give some back) artificiality.