On the flip side, if you still need a power cable anyway, it’s usually way cheaper to bundle the media (and optionally control/network) signals into the same cable than using wireless. (Sidenote: Honestly it’s kinda weird to me that we haven’t seen hardly any of this in consumer spaces. The newer USB-C revisions could easily supply power, display, audio, and network to the average TV over one cable.)

Now, with true wireless power (I’m thinking of this video in particular), that proposition can change dramatically.