The tax levied by RCW
82.08.020 does not apply to sales (including transfers of title through decree of appropriation) heretofore or hereafter made of the entire operating property of a publicly or privately owned public utility, or of a complete operating integral section thereof, to the state or a political subdivision thereof for use in conducting any public service business as defined in RCW
82.16.010. For purposes of this section, "operating property" includes digital goods and digital codes.