I wonder if the composer of the PS5 menu music makes a packet off it.
I doubt it, most of the Japanese games companies have inhouse composers who are probably just on a standard wage.
Arca was commissioned to make the boot up sound for the Analogue Mega SG system
you'd imagine they got paid for that, but its not on the same level as playstation. Luke Vibert made another one for them but it's not very interesting.
You'd expect Eno made some bank from Microsoft for the Win95 system sounds
A personal favourite is the Wii system sounds
composed by another fairly faceless, long time, nintendo composer Kazumi Totaka - who is also the voice of Yoshi. if my fridge sounded this chill i'd be very happy.