> RISC-V CPUs don't have any of that as there's no requirement that actual implementation be open source, only the ISA. There's a growing list of RISC-V cores

> RISC-V CPUs don't have any of that as there's no requirement that actual implementation be open source, only the ISA. There's a growing list of RISC-V cores that are themselves open source (that's how RISC-V ecosystem got started, btw). And unlike in x86 or ARM world, no-one would hassle you for licensing or royalties if you bring those designs to a foundry & mass-produce. Now as for say, GPUs to stick onto those, that is another matter.