How old is this commercial exactly? Well, half of it is actually explaining to the consumer to process of buying and setting up a video game console, by purchasing the game seperately and wiring it into your TV. This is back when people barely even comprehended what a video game was.
Incidentally, ET was universally reviled as one of the WORST games of all time, so much so that unsold copies of the game were buried in a landfill in New Mexico. Does that sound made up? Of course it does, but I promise you, it is NOT. Yeah, read that.