Because the primary function of a TV is displaying moving pictures while the primary function of a car is not related to its fuel type. The general public has not yet shown a dramatic interest in electric over ICE, but improvements to TV picture have been shown to be major drivers of adoption from color, HD, 4k, and so on. That is the whole reason why these laws are being considered, to help move people off ICE cars quicker than they would in a normal market.