I learned that many of the PONG home consoles used an AY-3-8910 despite only playing a B2 and a B3.
The question here is, what would a PONG console do if it realized it could use more notes? More channels?
The logical of you playing at home may say that those consoles would lack space to house music. Or the ability to realize it has more channels and notes. To this, I say, yes, but chiptune or something.