Google offers to produce free(*) chips for you. They have to be open source, and they are using 20 year old technology and you'll get 100 of them. Could someone reverse engineer a SID-chip and have Goggle start to crank those suckers out.
https://www.theregister.com/2020/07/03/open_chip_hardware/ [theregister.com]
https://fossi-foundation.org/2020/06/30/skywater-pdk [fossi-foundation.org]