MIPS is going to be open source, competing with RISC-V!
https://www.eetimes.com/document.asp?doc_id=1334087
https://www.eetimes.com/document.asp?doc_id=1334317
miniblog.
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Exploring a MIPS CPU that isn't RISC and even uses variable length instructions: https://www.eejournal.com/article/mips-i7200-breaks-the-chain/
(In embedded markets it's a lot easier to sell a new ISA apparently!)