I believe that the current OEMs (Original Equipment Manufacturers), even if their companies go bankrupt, still won’t switch to GrapheneOS.
GrapheneOS can directly reach out to China Alibaba OEM factories to produce its own GrapheneOS devices.
I’d like to see a pluggable CPU—similar to a SIM card. When device performance falls behind, users would simply buy a CPU module compatible with the GrapheneOS motherboard and swap it in themselves.