ARM is still IP locked like x86_64.

RISC-V is IP UNlocked. I bought RISC-V mini-boards (so cheap) years ago because I was planning to build my keyboard... but I am still on other projects... and there are even better RISC-V miniboard nowdays (better USB, more GPIOs... for a full fledge BFO-9000 keyboard!).

What I am waiting for are RISC-V high performance micro-architectures which will use the best silicon node (desktop, mobile, and for servers it seems there are a few attempts). One of the main issue seems... the compressed instructions which should be removed as it increases implementation complexity significantly in order to apply some of the known high-performance optimizations (it is not anectodale if ARM removed thumb machine instructions).

I like the idea, I code as much as possible things in RISC-V assembly now, and re-use a ton of code paths (at the assembly level!). I have even written a small RISC-V interpreter for x86_64 for static exes.