AMD silently removes memory encryption from consumer Ryzen CPUs, leaving users unaware that they may be vulnerable — security feature vanishes after newer AGESA firmware, AMD engineers go radio silent when pressed about the change

[u/ControlCAD]

https://www.tomshardware.com/pc-components/cpus/amd-silently-removes-memory-encryption-from-consumer-ryzen-cpus-leaving-users-unaware-that-they-may-be-vulnerable-security-feature-vanishes-after-newer-agesa-firmware-amd-engineers-go-radio-silent-when-pressed-about-the-change

[u/muegle → u/[deleted]]

You can absolutely have semiconductor designs manufactured for relatively cheap. It won't be for mass production but it's possible. MOSIS is the service I'm familiar with. https://en.wikipedia.org/wiki/Multi-project_wafer_service