Actually, there’s a fix for that problem, and has been for years. One company makes programmable emulator chips that can be burnt-in, and now they’re functional dupes of old, out-of-production chips. And, of course, they keep a library of old chip designs, to produce on the fly.
They’ve been doing that since the early 90s, and it’s apparently a nicely profitable sideline. . .
I remember reading about a similar scandal out here in WA, some time ago.
GALS, PALS and EPROMS baby!
You can program them to anything and they come in a variety of shapes, sizes, flavors and colors.