Sooner or later all those Public Sector decision makers will realise exactly how much it costs society each time a felon is shot with a real gun. That's when they've taken a break from surfing the net of course.
All that paperwork and hospital care, legal costs etc could be spent generating more wealth and hence more taxes. Not much of a decision really.
I read here that all of TASER's sales are non-recurring. Hmmm just like cars really like you never upgrade those or buy a new model either!