Everyone's right to celebrate the success of RISC-V, but part of me thinks it's a shame that there's relatively little architectural diversity (edit I should have said ISA diversity) in modern CPUs. MIPS, Alpha, and Super-H, have all but faded away. Power/PowerPC is still out there somewhere though. Apparently they're still working on SPARC, too. [0]
At least we'll always have the PS2. ...until the last one breaks, I guess.
>Power/PowerPC is still out there somewhere though.
https://openpowerfoundation.org
https://github.com/antonblanchard/microwatt
Unfortunately it isn't gaining any traction. From a Long term Cost perspective it is actually cheaper choosing ARM even if OpenPOWER is free. And ARM is already inexpensive.