What's the use case of 20 nm chips? I understand value in 3D printers for electronics, but what is unlocked at that level? Replacements would require design fil

What's the use case of 20 nm chips? I understand value in 3D printers for electronics, but what is unlocked at that level? Replacements would require design files, so I'm thinking more of what is unlocked at 20 nm for open-source designs or at hobbyist creations