It would be great if RISC-V and other open CPU architectures dominate the CPU and SoC market, but that is going to be a long time coming. lowRISC seems to be the best chance for that.
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RISC-V seems to be lacking on the software side, e.g. where is the upstream support for Linux, GCC, or llvm? There is support in FreeBSD, but only because one of the FreeBSD committers was able to work on this full time (I've been providing advice to him as I ported FreeBSD to arm64 & have an office next to his).
I also have issues with the fact that many parts of the ISA are optional. A general purpose OS needs some common level of support by the hardware. If it can't rely on some features it makes it difficult to support the different SoCs.
IIRC there are ISA changes that need to be finalised before the support goes upstream. The support is already developed and available on github though.