Why not wireless connections between sources and amp and between amps and speakers?
The big fat wires normally connecting amps and speakers have to transmit power measured in tens or hundreds of Watts. We are talking microwave ovens worth. by comparison, and you do not want to accidentally cook something in the radio beam, like a bird or your head.
Wireless data transmission over short distances usually needs only tiny amounts of power. Many applications run for months or years on a single button-cell power source.
The only way to get rid of the amp to speaker wires is to put the amp(s) in the speaker box.
But you still need to run mains power so wireless is rarely actually wire less.